Attachment 55087 Details for Bug 42131 – Demonstration how it may work

Demonstration how it may work

open_window.html (text/html), 201.10 KB, created by ikrabbe.ask on 2012-01-03 08:03:49 UTC

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Description:

Filename:

MIME Type:

Creator: ikrabbe.ask

Created: 2012-01-03 08:03:49 UTC

Size: 201.10 KB

patch

obsolete

><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
> "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
><head>
><meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
><meta name="generator" content="AsciiDoc 8.6.5" />
><title>open_window(5)</title>
><style type="text/css">
>/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
>
>/* Default font. */
>body {
> font-family: Georgia,serif;
>}
>
>/* Title font. */
>h1, h2, h3, h4, h5, h6,
>div.title, caption.title,
>thead, p.table.header,
>#toctitle,
>#author, #revnumber, #revdate, #revremark,
>#footer {
> font-family: Arial,Helvetica,sans-serif;
>}
>
>body {
> margin: 1em 5% 1em 5%;
>}
>
>a {
> color: blue;
> text-decoration: underline;
>}
>a:visited {
> color: fuchsia;
>}
>
>em {
> font-style: italic;
> color: navy;
>}
>
>strong {
> font-weight: bold;
> color: #083194;
>}
>
>h1, h2, h3, h4, h5, h6 {
> color: #527bbd;
> margin-top: 1.2em;
> margin-bottom: 0.5em;
> line-height: 1.3;
>}
>
>h1, h2, h3 {
> border-bottom: 2px solid silver;
>}
>h2 {
> padding-top: 0.5em;
>}
>h3 {
> float: left;
>}
>h3 + * {
> clear: left;
>}
>h5 {
> font-size: 1.0em;
>}
>
>div.sectionbody {
> margin-left: 0;
>}
>
>hr {
> border: 1px solid silver;
>}
>
>p {
> margin-top: 0.5em;
> margin-bottom: 0.5em;
>}
>
>ul, ol, li > p {
> margin-top: 0;
>}
>ul > li { color: #aaa; }
>ul > li > * { color: black; }
>
>pre {
> padding: 0;
> margin: 0;
>}
>
>#author {
> color: #527bbd;
> font-weight: bold;
> font-size: 1.1em;
>}
>#email {
>}
>#revnumber, #revdate, #revremark {
>}
>
>#footer {
> font-size: small;
> border-top: 2px solid silver;
> padding-top: 0.5em;
> margin-top: 4.0em;
>}
>#footer-text {
> float: left;
> padding-bottom: 0.5em;
>}
>#footer-badges {
> float: right;
> padding-bottom: 0.5em;
>}
>
>#preamble {
> margin-top: 1.5em;
> margin-bottom: 1.5em;
>}
>div.imageblock, div.exampleblock, div.verseblock,
>div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
>div.admonitionblock {
> margin-top: 1.0em;
> margin-bottom: 1.5em;
>}
>div.admonitionblock {
> margin-top: 2.0em;
> margin-bottom: 2.0em;
> margin-right: 10%;
> color: #606060;
>}
>
>div.content { /* Block element content. */
> padding: 0;
>}
>
>/* Block element titles. */
>div.title, caption.title {
> color: #527bbd;
> font-weight: bold;
> text-align: left;
> margin-top: 1.0em;
> margin-bottom: 0.5em;
>}
>div.title + * {
> margin-top: 0;
>}
>
>td div.title:first-child {
> margin-top: 0.0em;
>}
>div.content div.title:first-child {
> margin-top: 0.0em;
>}
>div.content + div.title {
> margin-top: 0.0em;
>}
>
>div.sidebarblock > div.content {
> background: #ffffee;
> border: 1px solid #dddddd;
> border-left: 4px solid #f0f0f0;
> padding: 0.5em;
>}
>
>div.listingblock > div.content {
> border: 1px solid #dddddd;
> border-left: 5px solid #f0f0f0;
> background: #f8f8f8;
> padding: 0.5em;
>}
>
>div.quoteblock, div.verseblock {
> padding-left: 1.0em;
> margin-left: 1.0em;
> margin-right: 10%;
> border-left: 5px solid #f0f0f0;
> color: #777777;
>}
>
>div.quoteblock > div.attribution {
> padding-top: 0.5em;
> text-align: right;
>}
>
>div.verseblock > pre.content {
> font-family: inherit;
> font-size: inherit;
>}
>div.verseblock > div.attribution {
> padding-top: 0.75em;
> text-align: left;
>}
>/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
>div.verseblock + div.attribution {
> text-align: left;
>}
>
>div.admonitionblock .icon {
> vertical-align: top;
> font-size: 1.1em;
> font-weight: bold;
> text-decoration: underline;
> color: #527bbd;
> padding-right: 0.5em;
>}
>div.admonitionblock td.content {
> padding-left: 0.5em;
> border-left: 3px solid #dddddd;
>}
>
>div.exampleblock > div.content {
> border-left: 3px solid #dddddd;
> padding-left: 0.5em;
>}
>
>div.imageblock div.content { padding-left: 0; }
>span.image img { border-style: none; }
>a.image:visited { color: white; }
>
>dl {
> margin-top: 0.8em;
> margin-bottom: 0.8em;
>}
>dt {
> margin-top: 0.5em;
> margin-bottom: 0;
> font-style: normal;
> color: navy;
>}
>dd > *:first-child {
> margin-top: 0.1em;
>}
>
>ul, ol {
> list-style-position: outside;
>}
>ol.arabic {
> list-style-type: decimal;
>}
>ol.loweralpha {
> list-style-type: lower-alpha;
>}
>ol.upperalpha {
> list-style-type: upper-alpha;
>}
>ol.lowerroman {
> list-style-type: lower-roman;
>}
>ol.upperroman {
> list-style-type: upper-roman;
>}
>
>div.compact ul, div.compact ol,
>div.compact p, div.compact p,
>div.compact div, div.compact div {
> margin-top: 0.1em;
> margin-bottom: 0.1em;
>}
>
>tfoot {
> font-weight: bold;
>}
>td > div.verse {
> white-space: pre;
>}
>
>div.hdlist {
> margin-top: 0.8em;
> margin-bottom: 0.8em;
>}
>div.hdlist tr {
> padding-bottom: 15px;
>}
>dt.hdlist1.strong, td.hdlist1.strong {
> font-weight: bold;
>}
>td.hdlist1 {
> vertical-align: top;
> font-style: normal;
> padding-right: 0.8em;
> color: navy;
>}
>td.hdlist2 {
> vertical-align: top;
>}
>div.hdlist.compact tr {
> margin: 0;
> padding-bottom: 0;
>}
>
>.comment {
> background: yellow;
>}
>
>.footnote, .footnoteref {
> font-size: 0.8em;
>}
>
>span.footnote, span.footnoteref {
> vertical-align: super;
>}
>
>#footnotes {
> margin: 20px 0 20px 0;
> padding: 7px 0 0 0;
>}
>
>#footnotes div.footnote {
> margin: 0 0 5px 0;
>}
>
>#footnotes hr {
> border: none;
> border-top: 1px solid silver;
> height: 1px;
> text-align: left;
> margin-left: 0;
> width: 20%;
> min-width: 100px;
>}
>
>div.colist td {
> padding-right: 0.5em;
> padding-bottom: 0.3em;
> vertical-align: top;
>}
>div.colist td img {
> margin-top: 0.3em;
>}
>
>@media print {
> #footer-badges { display: none; }
>}
>
>#toc {
> margin-bottom: 2.5em;
>}
>
>#toctitle {
> color: #527bbd;
> font-size: 1.1em;
> font-weight: bold;
> margin-top: 1.0em;
> margin-bottom: 0.1em;
>}
>
>div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
> margin-top: 0;
> margin-bottom: 0;
>}
>div.toclevel2 {
> margin-left: 2em;
> font-size: 0.9em;
>}
>div.toclevel3 {
> margin-left: 4em;
> font-size: 0.9em;
>}
>div.toclevel4 {
> margin-left: 6em;
> font-size: 0.9em;
>}
>
>span.aqua { color: aqua; }
>span.black { color: black; }
>span.blue { color: blue; }
>span.fuchsia { color: fuchsia; }
>span.gray { color: gray; }
>span.green { color: green; }
>span.lime { color: lime; }
>span.maroon { color: maroon; }
>span.navy { color: navy; }
>span.olive { color: olive; }
>span.purple { color: purple; }
>span.red { color: red; }
>span.silver { color: silver; }
>span.teal { color: teal; }
>span.white { color: white; }
>span.yellow { color: yellow; }
>
>span.aqua-background { background: aqua; }
>span.black-background { background: black; }
>span.blue-background { background: blue; }
>span.fuchsia-background { background: fuchsia; }
>span.gray-background { background: gray; }
>span.green-background { background: green; }
>span.lime-background { background: lime; }
>span.maroon-background { background: maroon; }
>span.navy-background { background: navy; }
>span.olive-background { background: olive; }
>span.purple-background { background: purple; }
>span.red-background { background: red; }
>span.silver-background { background: silver; }
>span.teal-background { background: teal; }
>span.white-background { background: white; }
>span.yellow-background { background: yellow; }
>
>span.big { font-size: 2em; }
>span.small { font-size: 0.6em; }
>
>span.underline { text-decoration: underline; }
>span.overline { text-decoration: overline; }
>span.line-through { text-decoration: line-through; }
>
>
>/*
> * xhtml11 specific
> *
> * */
>
>tt {
> font-family: monospace;
> font-size: inherit;
> color: navy;
>}
>
>div.tableblock {
> margin-top: 1.0em;
> margin-bottom: 1.5em;
>}
>div.tableblock > table {
> border: 3px solid #527bbd;
>}
>thead, p.table.header {
> font-weight: bold;
> color: #527bbd;
>}
>p.table {
> margin-top: 0;
>}
>/* Because the table frame attribute is overriden by CSS in most browsers. */
>div.tableblock > table[frame="void"] {
> border-style: none;
>}
>div.tableblock > table[frame="hsides"] {
> border-left-style: none;
> border-right-style: none;
>}
>div.tableblock > table[frame="vsides"] {
> border-top-style: none;
> border-bottom-style: none;
>}
>
>
>/*
> * html5 specific
> *
> * */
>
>.monospaced {
> font-family: monospace;
> font-size: inherit;
> color: navy;
>}
>
>table.tableblock {
> margin-top: 1.0em;
> margin-bottom: 1.5em;
>}
>thead, p.tableblock.header {
> font-weight: bold;
> color: #527bbd;
>}
>p.tableblock {
> margin-top: 0;
>}
>table.tableblock {
> border-width: 3px;
> border-spacing: 0px;
> border-style: solid;
> border-color: #527bbd;
> border-collapse: collapse;
>}
>th.tableblock, td.tableblock {
> border-width: 1px;
> padding: 4px;
> border-style: solid;
> border-color: #527bbd;
>}
>
>table.tableblock.frame-topbot {
> border-left-style: hidden;
> border-right-style: hidden;
>}
>table.tableblock.frame-sides {
> border-top-style: hidden;
> border-bottom-style: hidden;
>}
>table.tableblock.frame-none {
> border-style: hidden;
>}
>
>th.tableblock.halign-left, td.tableblock.halign-left {
> text-align: left;
>}
>th.tableblock.halign-center, td.tableblock.halign-center {
> text-align: center;
>}
>th.tableblock.halign-right, td.tableblock.halign-right {
> text-align: right;
>}
>
>th.tableblock.valign-top, td.tableblock.valign-top {
> vertical-align: top;
>}
>th.tableblock.valign-middle, td.tableblock.valign-middle {
> vertical-align: middle;
>}
>th.tableblock.valign-bottom, td.tableblock.valign-bottom {
> vertical-align: bottom;
>}
>/* Overrides for manpage documents */
>h1 {
> padding-top: 0.5em;
> padding-bottom: 0.5em;
> border-top: 2px solid silver;
> border-bottom: 2px solid silver;
>}
>h2 {
> border-style: none;
>}
>div.sectionbody {
> margin-left: 3em;
>}
>
>@media print {
> div#toc { display: none; }
>}
>
></style>
><script type="text/javascript">
>/*<![CDATA[*/
>var asciidoc = { // Namespace.
>
>/////////////////////////////////////////////////////////////////////
>// Table Of Contents generator
>/////////////////////////////////////////////////////////////////////
>
>/* Author: Mihai Bazon, September 2002
> * http://students.infoiasi.ro/~mishoo
> *
> * Table Of Content generator
> * Version: 0.4
> *
> * Feel free to use this script under the terms of the GNU General Public
> * License, as long as you do not remove or alter this notice.
> */
>
> /* modified by Troy D. Hanson, September 2006. License: GPL */
> /* modified by Stuart Rackham, 2006, 2009. License: GPL */
>
>// toclevels = 1..4.
>toc: function (toclevels) {
>
> function getText(el) {
> var text = "";
> for (var i = el.firstChild; i != null; i = i.nextSibling) {
> if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
> text += i.data;
> else if (i.firstChild != null)
> text += getText(i);
> }
> return text;
> }
>
> function TocEntry(el, text, toclevel) {
> this.element = el;
> this.text = text;
> this.toclevel = toclevel;
> }
>
> function tocEntries(el, toclevels) {
> var result = new Array;
> var re = new RegExp('[hH]([2-'+(toclevels+1)+'])');
> // Function that scans the DOM tree for header elements (the DOM2
> // nodeIterator API would be a better technique but not supported by all
> // browsers).
> var iterate = function (el) {
> for (var i = el.firstChild; i != null; i = i.nextSibling) {
> if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
> var mo = re.exec(i.tagName);
> if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
> result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
> }
> iterate(i);
> }
> }
> }
> iterate(el);
> return result;
> }
>
> var toc = document.getElementById("toc");
> if (!toc) {
> return;
> }
>
> // Delete existing TOC entries in case we're reloading the TOC.
> var tocEntriesToRemove = [];
> var i;
> for (i = 0; i < toc.childNodes.length; i++) {
> var entry = toc.childNodes[i];
> if (entry.nodeName == 'DIV'
> && entry.getAttribute("class")
> && entry.getAttribute("class").match(/^toclevel/))
> tocEntriesToRemove.push(entry);
> }
> for (i = 0; i < tocEntriesToRemove.length; i++) {
> toc.removeChild(tocEntriesToRemove[i]);
> }
>
> // Rebuild TOC entries.
> var entries = tocEntries(document.getElementById("content"), toclevels);
> for (var i = 0; i < entries.length; ++i) {
> var entry = entries[i];
> if (entry.element.id == "")
> entry.element.id = "_toc_" + i;
> var a = document.createElement("a");
> a.href = "#" + entry.element.id;
> a.appendChild(document.createTextNode(entry.text));
> var div = document.createElement("div");
> div.appendChild(a);
> div.className = "toclevel" + entry.toclevel;
> toc.appendChild(div);
> }
> if (entries.length == 0)
> toc.parentNode.removeChild(toc);
>},
>
>
>/////////////////////////////////////////////////////////////////////
>// Footnotes generator
>/////////////////////////////////////////////////////////////////////
>
>/* Based on footnote generation code from:
> * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
> */
>
>footnotes: function () {
> // Delete existing footnote entries in case we're reloading the footnodes.
> var i;
> var noteholder = document.getElementById("footnotes");
> if (!noteholder) {
> return;
> }
> var entriesToRemove = [];
> for (i = 0; i < noteholder.childNodes.length; i++) {
> var entry = noteholder.childNodes[i];
> if (entry.nodeName == 'DIV' && entry.getAttribute("class") == "footnote")
> entriesToRemove.push(entry);
> }
> for (i = 0; i < entriesToRemove.length; i++) {
> noteholder.removeChild(entriesToRemove[i]);
> }
>
> // Rebuild footnote entries.
> var cont = document.getElementById("content");
> var spans = cont.getElementsByTagName("span");
> var refs = {};
> var n = 0;
> for (i=0; i<spans.length; i++) {
> if (spans[i].className == "footnote") {
> n++;
> var note = spans[i].getAttribute("data-note");
> if (!note) {
> // Use [\s\S] in place of . so multi-line matches work.
> // Because JavaScript has no s (dotall) regex flag.
> note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
> spans[i].innerHTML =
> "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
> "' title='View footnote' class='footnote'>" + n + "</a>]";
> spans[i].setAttribute("data-note", note);
> }
> noteholder.innerHTML +=
> "<div class='footnote' id='_footnote_" + n + "'>" +
> "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
> n + "</a>. " + note + "</div>";
> var id =spans[i].getAttribute("id");
> if (id != null) refs["#"+id] = n;
> }
> }
> if (n == 0)
> noteholder.parentNode.removeChild(noteholder);
> else {
> // Process footnoterefs.
> for (i=0; i<spans.length; i++) {
> if (spans[i].className == "footnoteref") {
> var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
> href = href.match(/#.*/)[0]; // Because IE return full URL.
> n = refs[href];
> spans[i].innerHTML =
> "[<a href='#_footnote_" + n +
> "' title='View footnote' class='footnote'>" + n + "</a>]";
> }
> }
> }
>},
>
>install: function(toclevels) {
> var timerId;
>
> function reinstall() {
> asciidoc.footnotes();
> if (toclevels) {
> asciidoc.toc(toclevels);
> }
> }
>
> function reinstallAndRemoveTimer() {
> clearInterval(timerId);
> reinstall();
> }
>
> timerId = setInterval(reinstall, 500);
> if (document.addEventListener)
> document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
> else
> window.onload = reinstallAndRemoveTimer;
>}
>
>}
>asciidoc.install();
>/*]]>*/
></script>
></head>
><body class="manpage">
><div id="header">
><h1>
>open_window(5) Manual Page
></h1>
><h2>NAME</h2>
><div class="sectionbody">
>open_window -
> functions and test routines to open a glX window.
>
></div>
></div>
><div id="content">
><div class="sect1">
><h2 id="_synopsis">SYNOPSIS</h2>
><div class="sectionbody">
><div class="literalblock">
><div class="content">
><pre><tt>gcc -Wall -g -o open_window -lX11 -lGL open_window.c
>./open_window</tt></pre>
></div></div>
></div>
></div>
><div class="sect1">
><h2 id="_description">DESCRIPTION</h2>
><div class="sectionbody">
><div class="paragraph">A simple library and test code.</div>
><div class="listingblock">
><div class="content">
><pre><tt>#include &lt;X11/Xlib-xcb.h&gt;
>#include &lt;X11/Xlib.h&gt;
>extern long keysym2ucs(KeySym keysym);
>#include "keysym2ucs.c"
>#include &lt;xcb/xcb.h&gt;
>#include &lt;xcb/xcb_event.h&gt;
>#include &lt;xcb/xcb_keysyms.h&gt;
>#include &lt;xcb/xproto.h&gt;
>#include &lt;GL/gl.h&gt;
>#include &lt;GL/glx.h&gt;
>#include &lt;stdlib.h&gt;
>#include &lt;string.h&gt;
>#include &lt;stdio.h&gt;
>#include &lt;ftgl.h&gt;
>
>#ifndef USE_LIBEV
>#define USE_LIBEV 1
>#endif
>#ifndef USE_POLL
>#define USE_POLL 0
>#endif
>#ifndef DEBUG_WINDOW_GEOMETRY
>#define DEBUG_WINDOW_GEOMETRY 1
>#endif
>
>#if USE_POLL
>#include &lt;poll.h&gt;
>#else
>#include &lt;sys/select.h&gt;
>#endif
>#if USE_LIBEV
>#include &lt;ev.h&gt;
>#endif
>
>/* DEFINES */
>#ifndef DO_DEBUG_EVENT_LOOP
>#define DO_DEBUG_EVENT_LOOP 1
>#endif
>#if (DO_DEBUG_EVENT_LOOP&amp;1)
>static int DRI2EventBase=0;
>#endif
>
>#define NUM_POLL_CHANNELS 5
>
>/* PROTOTYPES */
>struct list_of_windows; /* each display stores a double linked list of windows */
>struct poll_channels {
>#if USE_POLL
> struct pollfd channel[NUM_POLL_CHANNELS];
>#else
> fd_set fds[3*NUM_POLL_CHANNELS];
>#endif
> int nfds;
> int timeout;
>};
>struct display {
> Display* handle;
> xcb_connection_t* connection;
> xcb_screen_t* screen;
> xcb_generic_event_t* event;
> struct list_of_windows_el* current_window;
> struct list_of_windows* all_windows;
>#if USE_LIBEV
> struct ev_loop* event_loop;
> struct watch_display_t {
> ev_io displayio;
> struct display* backref;
> } watch_display;
> ev_timer timer;
>#endif
> int (*loop)(struct display*);
> int (*select_window)(struct display*, int win);
>};
>struct info {
> int version;
> GLXFBConfig config;
> XVisualInfo* visual;
> xcb_colormap_t colormap;
> struct poll_channels channels;
> xcb_key_symbols_t* keysymbols;
>};
>struct geometry {
> float x,y,w,h;
>};
>struct drawctxt {
> GLXContext context;
> GLXDrawable drawable;
> GLXWindow window;
>};
>struct context {
> struct drawctxt* gl;
> void* attached;
>};
>enum window_modes { wm_size_changed=1, wm_new_context=2 };
>struct window {
> struct display* display;
> xcb_window_t handle;
> struct info* info;
> struct context ctxt;
> struct geometry geom;
> int mode;
> int keyflags;
> int (*open)(struct window* w);
> int (*draw)(struct window* w);
>};
></tt></pre></div></div>
><div class="sect2">
><h3 id="_window_lists">Window Lists</h3>
><div class="paragraph">We might want to be able to handle several windows for one connection.</div>
><div class="listingblock">
><div class="content">
><pre><tt>struct list_of_windows_el {
> struct list_of_windows_el *prev, *next;
> int mode;
> struct window window;
>};
>enum list_modes { lm_sorted=0, lm_list };
>enum list_element_mode { lem_data_set=0
>};
>struct list_of_windows {
> struct list_of_windows_el *head;
> unsigned elsize, space, count;
> enum list_modes mode;
>};
>struct list_return { void* base; void* el; };
>struct any_list { void* head; unsigned elsize; unsigned space; unsigned count;
> int mode; };
>struct any_list_element { struct any_list_element* prev, *next;
> int mode;
>};
>
>#define COPY_LIST_ELEMENT(SRC,DEST,SIZE) do { \
> char* dp = (char*)&amp;(DEST-&gt;mode); \
> char* sp = (char*)&amp;(SRC-&gt;mode); \
> int ofs, len; \
> dp += sizeof(DEST-&gt;mode); \
> sp += sizeof(SRC-&gt;mode); \
> ofs = dp-((char*)DEST); \
> len = SIZE, len = (len&gt;ofs) ?len-ofs :0; \
> DEST-&gt;mode |= (1&lt;&lt;lem_data_set); \
> /* printf("%p %p %d\n", dp, sp, len); */ \
> memcpy(dp,sp,len); \
>} while(0)
>
>extern void* new_list(unsigned n_elements, unsigned size);
>#define LIST_FUNC(N) struct list_return N(void* list,\
> void* element, int(*compar)(void*a,void*b))
>extern LIST_FUNC(search_element);
>extern LIST_FUNC(add_element);
>extern LIST_FUNC(list_mode);
>extern LIST_FUNC(array_mode);
>
>static int compare_window_elements(void* a, void* b);
>#define ADD_WINDOW(DISPLAY,WINDOW) do \
>{ \
> struct list_of_windows_el W; \
> memset(&amp;W,0,sizeof(W)); \
> W.window = WINDOW; \
> DISPLAY-&gt;current_window = add_element(DISPLAY-&gt;all_windows,&amp;W,compare_window_elements).el;\
>} \
>while(0)
></tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_extensions_query">Extensions Query</h3>
><div class="paragraph">We might want to react on extension events. So we need the configuration.</div>
><div class="listingblock">
><div class="content">
><pre><tt>struct query_extensions_t {
> xcb_query_extension_cookie_t ext;
> xcb_query_extension_reply_t* repl;
> const char* name; int nameLen;
>};
>static void init_extension(xcb_connection_t* c, struct query_extensions_t *qext);
>void init_extension(xcb_connection_t* c, struct query_extensions_t *qext)
>{
> xcb_generic_error_t* err;
> qext-&gt;repl = xcb_query_extension_reply(c, qext-&gt;ext,&amp;err);
> if (err) {
> fputs("failed to query extension ",stdout);
> fwrite(qext-&gt;name,qext-&gt;nameLen,1,stdout);
> fputc('\n',stdout);
> }
> else {
> fputs("Extension ",stdout);
> fwrite(qext-&gt;name,qext-&gt;nameLen,1,stdout);
> fprintf(stdout," parameters (op=%3d, ev=%3d, err=%3d)\n",
> qext-&gt;repl-&gt;major_opcode,
> qext-&gt;repl-&gt;first_event,
> qext-&gt;repl-&gt;first_error);
>#if (DO_DEBUG_EVENT_LOOP&amp;1)
> if (0==(memcmp(qext-&gt;name,"DRI2",qext-&gt;nameLen&lt;4?qext-&gt;nameLen:4)))
> DRI2EventBase=qext-&gt;repl-&gt;first_event;
>#endif
> }
>}</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_functions">Functions</h3>
><div class="paragraph">Some functions that are exported by this module.</div>
><div class="listingblock">
><div class="content">
><pre><tt>static int open_x11_window(struct window* win);
>static int std_x11_loop(struct display* display);
>#if USE_LIBEV
>static void std_x11_event(struct ev_loop* L, struct ev_io* w, int revents);
>typedef struct { unsigned char code[8]; } utf8_t;
>static utf8_t get_utf8_from_ucs(uint32_t cp);
>#endif
>static int test_draw(struct window* win);
>
>static int wait_for_event(struct display* d);
>
>static int select_window(struct display* display, int win);</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_the_main_function">The Main function</h3>
><div class="paragraph">This function contains the test code for the library functions and is not thought
>to be exported if a library is build from this source.</div>
><div class="listingblock">
><div class="content">
><pre><tt>/* static struct display* new_display(); */
>/* static struct window* new_window(); */
>static struct info* new_info();
>static struct drawctxt* new_drawctxt();
>int main(int argc, char** argv)
>{
>#if (TEST_LIST&gt;0)
> struct window win;
> struct display* D = new_display();
> int i;
>
> D-&gt;all_windows = new_list(10,sizeof(struct window));
> memset(&amp;win,0x0,sizeof(win));
> win.display = D;
> for (i=0;i&lt;10;i++) {
> win.handle = i; ADD_WINDOW(D,win);
> }
> for (i=0; i&lt;D-&gt;all_windows-&gt;count; ++i) {
> int handle = (int)(D-&gt;all_windows-&gt;head[i].window.handle);
> printf("%3d: %3d\n", i, handle);
> }
>#else
> int i,n;
> int minKey, maxKey;
> Display* D;
> const char* dn;
> GLXFBConfig* cfgs;
> struct window win;
> struct display display;
> int defScreen;
>
> memset(&amp;win,0,sizeof(win));
> memset(&amp;display,0,sizeof(display));
> win.display = &amp;display;
> win.display-&gt;select_window = select_window;
> win.display-&gt;all_windows = new_list(2,sizeof(struct list_of_windows_el));
> win.info = new_info();
> win.draw = test_draw;
> win.ctxt.gl = new_drawctxt();
> win.open = open_x11_window;
> win.display-&gt;loop = wait_for_event;
> D = win.display-&gt;handle = XOpenDisplay(dn=getenv("DISPLAY"));
> if (!D) {
> printf("cannot connect to display \"%s\"\n",
> dn ?dn :"(null)");
> exit(-1);
> }
> win.display-&gt;connection = XGetXCBConnection(D);
> XSetEventQueueOwner(D,XCBOwnsEventQueue);
> win.display-&gt;watch_display.backref = win.display;
> ev_io_init(
> &amp;win.display-&gt;watch_display.displayio,
> std_x11_event,
> xcb_get_file_descriptor(win.display-&gt;connection),
> EV_READ);
> win.display-&gt;event_loop = ev_default_loop(0);
> ev_io_start(win.display-&gt;event_loop, &amp;win.display-&gt;watch_display.displayio);
> XDisplayKeycodes(D, &amp;minKey, &amp;maxKey);
> win.info-&gt;keysymbols = xcb_key_symbols_alloc(win.display-&gt;connection);
> printf("Display Keycodes [%02x,%02x]\n", minKey, maxKey);
>
>{
> enum {qext_num=32};
> uint32_t fill, num=qext_num, pos;
> struct query_extensions_t qext[qext_num];
> xcb_list_extensions_cookie_t list;
> xcb_list_extensions_reply_t *lr;
> xcb_generic_error_t *err;
> xcb_str_iterator_t name_i;
> int go = 1;
> list = xcb_list_extensions(win.display-&gt;connection);
> lr = xcb_list_extensions_reply(win.display-&gt;connection,
> list, &amp;err);
> if (!err) go=1; else go=0;
> num=32;
> if (go) {
> name_i = xcb_list_extensions_names_iterator(lr);
> }
> fill=pos=0;
> while (go) {
> go = (name_i.data != xcb_str_end(name_i).data);
> if (go) {
> qext[fill].name = xcb_str_name(name_i.data);
> qext[fill].nameLen = xcb_str_name_length(name_i.data);
> qext[fill].ext = xcb_query_extension(
> win.display-&gt;connection,
> qext[fill].nameLen, qext[fill].name);
> xcb_str_next(&amp;name_i);
> ++fill;
> }
> if (fill==num) { fill=0; for(pos=0;pos&lt;num;++pos) {
> init_extension(win.display-&gt;connection,&amp;qext[pos]);
> if (qext[pos].repl) free(qext[pos].repl);
> }}
> }
> if (fill&gt;0) for(pos=0;pos&lt;fill;++pos){
> init_extension(win.display-&gt;connection,&amp;qext[pos]);
> if (qext[pos].repl) free(qext[pos].repl);
> }
> free(lr);
>}
>
> defScreen = DefaultScreen(D);
> xcb_screen_iterator_t screen_iter =
> xcb_setup_roots_iterator(xcb_get_setup(win.display-&gt;connection));
> for(i = defScreen;
> screen_iter.rem &amp;&amp; i &gt; 0;
> --i, xcb_screen_next(&amp;screen_iter));
> win.display-&gt;screen = screen_iter.data;
> win.geom.w = (float)win.display-&gt;screen-&gt;width_in_pixels;
> win.geom.h = (float)win.display-&gt;screen-&gt;height_in_pixels;
>{
> int hi, lo;
> if ( False == (glXQueryVersion(D, &amp;hi, &amp;lo)) ) {
> printf("Failed to query GLX for Display: %p\n", D);
> return -1;
> }
> win.info-&gt;version = (hi&lt;&lt;4) | (lo&amp;0xf);
> printf("GLX %d.%d\n", hi, lo);
>}
> printf("GLX Version: %d\n", win.info-&gt;version);
>
>{
> int attr[] = { GLX_DOUBLEBUFFER, True,
> GLX_X_VISUAL_TYPE, GLX_TRUE_COLOR,
> GLX_X_RENDERABLE, True,
> None
> };
> cfgs = glXChooseFBConfig(D,0,attr,&amp;n);
> if (n&gt;0) {
> win.info-&gt;config = cfgs[0];
> win.info-&gt;visual = glXGetVisualFromFBConfig(D,win.info-&gt;config);
> }
> XFree(cfgs);
>}
> printf("found %d configs\n", n);
> win.ctxt.gl-&gt;context = glXCreateNewContext(D,win.info-&gt;config, GLX_RGBA_TYPE, 0, True);
> win.mode |= wm_new_context;
> win.info-&gt;colormap = xcb_generate_id(win.display-&gt;connection);
> xcb_create_colormap(win.display-&gt;connection, XCB_COLORMAP_ALLOC_NONE,
> win.info-&gt;colormap, win.display-&gt;screen-&gt;root,
> win.info-&gt;visual-&gt;visualid);
> win.open(&amp;win);
> ADD_WINDOW(win.display,win);
> win.ctxt.gl-&gt;window = win.handle;
> glXMakeContextCurrent(D,win.ctxt.gl-&gt;window,win.ctxt.gl-&gt;window,win.ctxt.gl-&gt;context);
> win.ctxt.gl-&gt;drawable = win.ctxt.gl-&gt;window;
> win.display-&gt;loop(win.display);
>#endif
> return 0;
>}</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_creating_types">Creating Types</h3>
><div class="paragraph">In general a type can be created by <tt>calloc(1,sizeof(T))</tt>.</div>
><div class="listingblock">
><div class="content">
><pre><tt>#define new_F(N,TN) TN* new_ ## N() { \
> TN* obj = calloc(1,sizeof(TN)); return obj; }\
>
>#define new_SF(N) new_F(N,struct N)
>
>/* new_SF(display) */
>new_SF(info)
>/* new_SF(window) */
>new_SF(drawctxt)</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_x11_implementation_8201_8212_8201_open">X11 Implementation&#8201;&#8212;&#8201;open</h3>
><div class="paragraph">Window handle creation in an X11 System.</div>
><div class="listingblock">
><div class="content">
><pre><tt>#define GEOM(G) (int)(G.x+.5), (int)(G.y+.5),\
>(unsigned int)(G.w+.5), (unsigned int)(G.h+.5)
>int open_x11_window(struct window* win)
>{
> uint32_t eventmask = XCB_EVENT_MASK_EXPOSURE|XCB_EVENT_MASK_KEY_PRESS|\
> XCB_EVENT_MASK_STRUCTURE_NOTIFY;
> uint32_t valuelist[] = { XCB_NONE, eventmask, win-&gt;info-&gt;colormap, 0 };
> uint32_t valuemask = XCB_CW_EVENT_MASK|XCB_CW_COLORMAP|\
> XCB_CW_BACK_PIXMAP;
> xcb_void_cookie_t cookies[2];
> xcb_connection_t* c = win-&gt;display-&gt;connection;
> xcb_generic_error_t *err;
> if (win-&gt;handle != 0x0) return win-&gt;handle;
>
> win-&gt;handle = xcb_generate_id(win-&gt;display-&gt;connection);
> cookies[0] = xcb_create_window(win-&gt;display-&gt;connection,
> XCB_COPY_FROM_PARENT, win-&gt;handle, win-&gt;display-&gt;screen-&gt;root,
> GEOM(win-&gt;geom), 0,
> XCB_WINDOW_CLASS_INPUT_OUTPUT, win-&gt;info-&gt;visual-&gt;visualid,
> valuemask, valuelist);
> cookies[1] = xcb_map_window(win-&gt;display-&gt;connection, win-&gt;handle);
> if (0x0 != (err=xcb_request_check(c,cookies[0]))) {
> printf("request (%03d,%03d) failed with error %3d\n",
> err-&gt;pad0, err-&gt;major_code, err-&gt;error_code);
> return 1;
> }
> if (0x0 != (err=xcb_request_check(c,cookies[1]))) {
> printf("request (%03d,%03d) failed with error %3d\n",
> err-&gt;pad0, err-&gt;major_code, err-&gt;error_code);
> return 2;
> }
> return 0;
>}</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_test_implementation">Test implementation</h3>
><div class="paragraph">The test implementation of the window draw function, also needs some special
>context data, that is initialized on demand.</div>
><div class="listingblock">
><div class="content">
><pre><tt>enum test_context_numbers { tc_num_textures=1 };
>struct test_context
>{
> FTGLfont* font;
> char* font_path;
> GLuint texture[tc_num_textures];
> int status;
>};
>int test_draw(struct window* w)
>{
> static int cmode=0;
> static FTGLfont *font=0x0;
> static const char* font_path="font.ttf";
> if ( font==0x0 ) {
> font = ftglCreateTextureFont(font_path);
> }
> switch (cmode) {
> case 0: glClearColor(.0f,.5f,0.8f,0.5f); break;
> case 1: glClearColor(.8f,.5f,.0f,.5f); break;
> case 2: glClearColor(.5f,.8f,.0f,.5f); break;
> case 3: glClearColor(.5f,.0f,.8f,.5f); break;
> }
> cmode = (cmode&gt;2)?0:cmode+1;
> glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
> glMatrixMode(GL_PROJECTION);
> glLoadIdentity();
> glOrtho(-1000,1000,1000,-1000,0,1);
> glColor4f(.0f,.0f,.0f,.0f);
> glBegin(GL_QUADS);
>
> glVertex3f(10.0f,10.0f,.0f);
> glVertex3f(400.0f,10.0f,.0f);
> glVertex3f(400.0f,400.0f,.0f);
> glVertex3f(10.0f,400.0f,.0f);
>
> glEnd();
> glXSwapBuffers(w-&gt;display-&gt;handle, w-&gt;ctxt.gl-&gt;window);
> return 0;
>}</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_standard_loop">Standard loop</h3>
><div class="paragraph">The standard loop is used when there are no other input sources. Later, this
>might be modified to poll from other filedescriptors too.</div>
><div class="listingblock">
><div class="content">
><pre><tt>#if (DO_DEBUG_EVENT_LOOP&amp;1)
>#define DEBUG_EVENT_LOOP_EVENT(E,display) do \
> { \
> static const char* event_name_table[0x7f] = { \
> 0x0, 0x0 \
> }; \
> const char* event_name = event_name_table[0]; \
> if ( event_name_table[0]==event_name_table[1] ) { \
> int s,n,l; \
> event_name_table[0] = "unknown"; \
> n=(sizeof(event_name_table)/sizeof(const char*)); \
> for (l=0,s=1; s&lt;n; s+=l) { \
> if (l==0)l=1; \
> else { \
> l*=2; \
> if (s+l&gt;n) l=n-s; \
> } \
> memcpy(event_name_table+s,event_name_table,l*sizeof(const char*)); \
> } \
> event_name_table[0] = "error"; \
> event_name_table[1] = "reply"; \
> event_name_table[0xc] = "expose"; \
> event_name_table[0x2] = "key-press"; \
> event_name_table[MapNotify] = "map"; \
> event_name_table[UnmapNotify] = "unmap"; \
> event_name_table[ConfigureNotify] = "configure"; \
> if (DRI2EventBase!=0) { \
> event_name_table[DRI2EventBase] = "DRI2 Swap Complete"; \
> event_name_table[DRI2EventBase+1] = "DRI2 Invalidate Buffers"; \
> } \
> } \
> event_name = event_name_table[E-&gt;response_type &amp; ~0x80]; \
> fprintf(stderr, "event:%20s(%02d) %d\n", event_name?event_name:"*FATAL*", E-&gt;response_type, \
> xcb_connection_has_error(display-&gt;connection)); \
> } while (0)
>#else
>#define DEBUG_EVENT_LOOP_EVENT(E,display) do { } while(0)
>#endif
>
>#if USE_LIBEV
>void std_x11_event(struct ev_loop* L, struct ev_io* w, int revents)
>{
> struct watch_display_t *x = (struct watch_display_t*)w;
> struct display* d = x-&gt;backref;
> std_x11_loop(d);
>}
>#endif
>#define STDX11LOOP_SelectWindow(WIN) do { \
> if(cwh!=WIN) { \
> if (0!=change_window(display,WIN)) { \
> printf("the window %d not found\n", WIN); \
> return -1; \
> } \
> cw = display-&gt;current_window; \
> } \
>} while(0)
>#define SQR(X) ((X)*(X))
>#define GEOM_DELTA(A,B) \
> (SQR(A.x-B.x)+SQR(A.y-B.y)+SQR(A.w-B.w)+SQR(A.h-B.h))
>int std_x11_loop(struct display* display)
>{
> int running = 1;
> struct list_of_windows_el* cw;
> struct window* win;
> int cwh;
> xcb_generic_event_t*E;
> int (*change_window)(struct display* display, int w);
>
> if (!display) { printf("no display structure to work on\n"); return -1; }
> cw = display-&gt;current_window;
> win = &amp;cw-&gt;window;
> cwh = (cw) ?cw-&gt;window.handle:0x0;
> change_window = display-&gt;select_window;
>
> while(running) {
> E = display-&gt;event = xcb_poll_for_event(display-&gt;connection);
> if (!E) break;
> DEBUG_EVENT_LOOP_EVENT(E,display);
> switch (E-&gt;response_type &amp; ~0x80) {
> case XCB_KEY_PRESS:{
> xcb_key_press_event_t* key =(xcb_key_press_event_t*)E;
> xcb_keysym_t sym = xcb_key_symbols_get_keysym(
> win-&gt;info-&gt;keysymbols, key-&gt;detail, win-&gt;keyflags );
> long ucs = keysym2ucs((KeySym)sym);
> utf8_t utf8 = get_utf8_from_ucs(ucs);
> utf8.code[0] = 0x0;
>/*
> printf("found ucs code x0%04x, %s, from symbol 0x%04x\n", (uint32_t)ucs, utf8.code, sym);
> printf("DETAIL = 0x%04x\n", key-&gt;detail); */
> } break;
> case XCB_EXPOSE:{
> struct geometry G;
> float H;
> struct window* W;
> Display* D;
> xcb_window_t win;
> GLXContext ctxt;
> xcb_expose_event_t* expose = (xcb_expose_event_t*)E;
> int (*draw)(struct window*);
> STDX11LOOP_SelectWindow(expose-&gt;window);
> W = &amp;cw-&gt;window;
> D = W-&gt;display-&gt;handle;
> win = W-&gt;handle;
> ctxt = W-&gt;ctxt.gl-&gt;context;
> G = W-&gt;geom;
> draw = cw-&gt;window.draw;
> printf("drawing (%d,%d %dx%d)...\n", GEOM(G));
> H = W-&gt;display-&gt;screen-&gt;height_in_pixels;
> if (G.h&gt;H)G.h=H;
> G.y = H - G.h;
> G.x = .0f;
> printf("viewport (%d,%d %dx%d)...\n", GEOM(G));
> glViewport(G.x,G.y,G.w,G.h);
> if (draw) draw(&amp;cw-&gt;window);
> printf("...done.\n");
> } break;
> case XCB_CONFIGURE_NOTIFY:{
> Display* D;
> GLXContext ctxt;
> xcb_connection_t* c;
> xcb_window_t win;
> uint16_t mask;
> uint32_t values[4];
> struct geometry G,O;
> xcb_configure_notify_event_t* cfg =
> (xcb_configure_notify_event_t*)E;
> STDX11LOOP_SelectWindow(cfg-&gt;window);
> win = cw-&gt;window.handle;
> c = cw-&gt;window.display-&gt;connection;
> D = cw-&gt;window.display-&gt;handle;
> ctxt = cw-&gt;window.ctxt.gl-&gt;context;
> mask = XCB_CONFIG_WINDOW_X|
> XCB_CONFIG_WINDOW_Y|
> XCB_CONFIG_WINDOW_WIDTH|
> XCB_CONFIG_WINDOW_HEIGHT;
> G=cw-&gt;window.geom; O.x=(float)cfg-&gt;x;
> O.y=(float)cfg-&gt;y; O.w=(float)cfg-&gt;width;
> O.h=(float)cfg-&gt;height;
> if(GEOM_DELTA(G,O)&gt;.25f) {
>#if DEBUG_WINDOW_GEOMETRY
> printf("configured window "
> "[(%d,%d %dx%d) - (%d,%d %dx%d)]Â² ="
> "%f\n", GEOM(G), GEOM(O), GEOM_DELTA(G,O));
>#endif
> G=O; values[0]=(uint32_t)(G.x+.5f);
> values[1]=(uint32_t)(G.y+.5f);
> values[2]=(uint32_t)(G.w+.5f);
> values[3]=(uint32_t)(G.h+.5f);
> // xcb_configure_window(c,cw-&gt;window.ctxt.gl-&gt;window,mask,values);
> cw-&gt;window.geom = G;
> cw-&gt;window.mode|= wm_size_changed;
> }
>#if DEBUG_WINDOW_GEOMETRY&amp;2
> else {
> printf("not configured window "
> "[(%d,%d %dx%d) - (%d,%d %dx%d)]Â² ="
> "%f\n", GEOM(G), GEOM(O), GEOM_DELTA(G,O));
> }
>#endif
> } break;
> case 0: {
> xcb_generic_error_t* err = (xcb_generic_error_t*)E;
> fprintf(stderr, "got error code %03d\n"
> "error label: %-30s\n", err-&gt;error_code,
> xcb_event_get_error_label(err-&gt;error_code)
> );
> } break;
> }
> free(E); display-&gt;event = 0x0;
> }
> return 0;
>}
></tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_ucs_to_utf8_converter">UCS to UTF8 Converter</h3>
><div class="paragraph">Convert a UCS Character to a UTF8 code.</div>
><div class="listingblock">
><div class="content">
><pre><tt>utf8_t get_utf8_from_ucs(uint32_t cp)
>{
> utf8_t ret={ {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff} };
> if (cp&lt;=0x7f) {
> ret.code[0] = (unsigned char)cp;
> ret.code[1] = 0x0;
> }
> else if (cp&lt;=0x7ff) {
> ret.code[0] = (0xc0|(cp&gt;&gt;6));
> ret.code[1] = (0x80|(cp&amp;0x03f));
> ret.code[2] = 0x0;
> }
> else if (cp&lt;=0xffff) {
> ret.code[0] = (0xe0|(cp&gt;&gt;12));
> ret.code[1] = (0x80|((cp&gt;&gt;6)&amp;0x3f));
> ret.code[2] = (0x80|(cp&amp;0x3f));
> ret.code[3] = 0x0;
> }
> else if (cp&lt;=0x1fffff) {
> ret.code[0] = (0xf0|(cp&gt;&gt;18));
> ret.code[1] = (0x80|((cp&gt;&gt;12)&amp;0x3f));
> ret.code[2] = (0x80|((cp&gt;&gt;6)&amp;0x3f));
> ret.code[3] = (0x80|(cp&amp;0x3f));
> ret.code[4] = 0x0;
> }
> else if (cp&lt;=0x3ffffff) {
> ret.code[0] = (0xf8|(cp&gt;&gt;24));
> ret.code[1] = (0x80|(cp&gt;&gt;18));
> ret.code[2] = (0x80|((cp&gt;&gt;12)&amp;0x3f));
> ret.code[3] = (0x80|((cp&gt;&gt;6)&amp;0x3f));
> ret.code[4] = (0x80|(cp&amp;0x3f));
> ret.code[5] = 0x0;
> }
> else if (cp&lt;=0x7fffffff) {
> ret.code[0] = (0xfc|(cp&gt;&gt;30));
> ret.code[1] = (0x80|((cp&gt;&gt;24)&amp;0x3f));
> ret.code[2] = (0x80|((cp&gt;&gt;18)&amp;0x3f));
> ret.code[3] = (0x80|((cp&gt;&gt;12)&amp;0x3f));
> ret.code[4] = (0x80|((cp&gt;&gt;6)&amp;0x3f));
> ret.code[5] = (0x80|(cp&amp;0x3f));
> ret.code[6] = 0x0;
> }
> return ret;
>}
></tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_waiting_for_window_events_and_timeouts">Waiting for Window Events and Timeouts</h3>
><div class="paragraph">Most events have input sources, which can be polled from a set of file handles.</div>
><div class="listingblock">
><div class="content">
><pre><tt>int wait_for_event(struct display* d)
>{
> int ret = -1;
> static struct ev_loop* L = 0x0;
> if (!L) L=EV_DEFAULT;
> ev_run(L,0);
> ret = (int)ev_depth(L);
> return ret;
>}
></tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_general_list_operations">General List Operations</h3>
><div class="paragraph">Some simple list operations on opaque list elements. Acutally we use an array of
>lists, to be able to convert the list into a sorted array, which can be
>searched by binary search.</div>
><div class="listingblock">
><div class="content">
><pre><tt>void* new_list(unsigned n, unsigned l)
>{
> enum { AnyList=sizeof(struct any_list), AnyEl=sizeof(struct any_list_element) };
> unsigned E = l+AnyEl;
> unsigned L = n*E + AnyList;
> void* space = calloc(1,L);
> struct any_list* List=space, ListObj= { ((char*)space)+sizeof(struct any_list), E, n*E, 0, 0 };
> *List = ListObj;
> return space;
>}
>LIST_FUNC(add_element)
>{
> struct list_return ret = {0x0,0x0};
> char*ip,*dp,*ep;
> struct any_list *_l = list;
> struct any_list_element *_e;
>
> ip=dp=0x0; ep=((char*)_l-&gt;head)+_l-&gt;count*_l-&gt;elsize;
> if ( ((char*)_l-&gt;head+_l-&gt;space)&lt;(ep+_l-&gt;elsize) )
> return ret;
> ret = search_element(list,element,compar);
> if (ret.el!=0x0) {ret.el=0x0; return ret;}
> if (ret.base == 0x0) {
> if (_l-&gt;head==0x0) return ret; /* {0,0} =&gt; can't add to void */
> _e = _l-&gt;head;
> if ((_e-&gt;mode &amp; (1&lt;&lt;lem_data_set)) == 0) {
> COPY_LIST_ELEMENT(((struct any_list_element*)element),_e,_l-&gt;elsize);
> ret.el=_e;
> _l-&gt;count++;
> }
> else {
> ip=_l-&gt;head; dp=ip+_l-&gt;elsize;
> }
> }
> else {
> ip=ret.base; ip+=_l-&gt;elsize;
> dp=ip; dp+=_l-&gt;elsize;
> if ( ((char*)_l-&gt;head)+_l-&gt;space &lt; ip ) ip = 0x0;
> }
> if (ip!=0x0) {
> _e = ((struct any_list_element*)ip);
> if (ep&gt;ip) { memcpy(dp,ip,ep-ip); }
> COPY_LIST_ELEMENT(((struct any_list_element*)element),_e,_l-&gt;elsize);
> _l-&gt;count++;
> }
> return ret;
>}
>
>LIST_FUNC(search_element)
>{
> struct list_return ret = {0x0,0x0};
> char* bp;
> unsigned m,l,r;
> int c;
> struct any_list* L=list;
>
> if (L-&gt;count==0) return ret;
> for (bp=L-&gt;head,l=0,r=L-&gt;count-1; 0&lt;((r+1)-l); ) {
> m = (l+r)/2;
> ret.base=(L-&gt;head+m*L-&gt;elsize);
> c = compar(element,ret.base);
> if (c==0) { ret.el=ret.base; return ret; }
> else if (c&lt;0) r=m-1;
> else l=m+1;
> }
> if (c&lt;0) ret.base=(L-&gt;head+l*L-&gt;elsize);
> return ret;
>}
>
>int compare_window_elements(void* a, void* b)
>{
> struct list_of_windows_el* A = a;
> struct list_of_windows_el* B = b;
> int i = A ?A-&gt;window.handle: 0;
> int j = B ?B-&gt;window.handle: 0;
>
> return (i&lt;j) ?-1 :(i==j)? 0: +1;
>}
></tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_list_modes">LIST MODES</h3>
><div class="paragraph">Depending on the usage of a data space, we might store the collection as a sorted
>array or as a double linked list. The transformation functions might be used
>to assure that wanted mode is enabled.</div>
><div class="paragraph">The list modes are</div>
><div class="ulist"><ul>
><li>
>
><tt>lm_list</tt> â a double linked list.
>
></li>
><li>
>
><tt>lm_array</tt> â a sorted array.
>
></li>
></ul></div>
><div class="listingblock">
><div class="content">
><pre><tt>LIST_FUNC(list_mode)
>{
> struct list_return ret = {0x0,0x0};
> return ret;
>}
>LIST_FUNC(array_mode)
>{
> struct list_return ret = {0x0,0x0};
> return ret;
>}</tt></pre></div></div>
></div>
><div class="sect2">
><h3 id="_selecting_a_window">SELECTING A WINDOW</h3>
><div class="paragraph">Most applications will run only one window, but this code is a good use case
>for the list handler.</div>
><div class="listingblock">
><div class="content">
><pre><tt>int select_window(struct display* d, int win)
>{
> struct list_of_windows_el W;
> struct list_return res;
> W.window.handle=(xcb_window_t)win;
> res = search_element(d-&gt;all_windows, &amp;W,compare_window_elements);
> d-&gt;current_window = res.el;
> return (res.el ?0 :1);
>}</tt></pre></div></div>
></div>
></div>
></div>
></div>
><div id="footnotes"><hr /></div>
><div id="footer">
><div id="footer-text">
>Version 0.1 
>Last updated 2012-01-03 16:31:53 CET
></div>
></div>
></body>
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<body class="manpage">
<div id="header">
<h1>
open_window(5) Manual Page
</h1>
<h2>NAME</h2>
<div class="sectionbody">
<p>open_window -
   functions and test routines to open a glX window.
</p>
</div>
</div>
<div id="content">
<div class="sect1">
<h2 id="_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="literalblock">
<div class="content">
<pre><tt>gcc -Wall -g -o open_window -lX11 -lGL open_window.c
./open_window</tt></pre>
</div></div>
</div>
</div>
<div class="sect1">
<h2 id="_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph"><p>A simple library and test code.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;X11/Xlib-xcb.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;X11/Xlib.h&gt;</span>
<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="color: #009900">long</span> <span style="font-weight: bold"><span style="color: #000000">keysym2ucs</span></span><span style="color: #990000">(</span><span style="color: #008080">KeySym</span> keysym<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">"keysym2ucs.c"</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;xcb/xcb.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;xcb/xcb_event.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;xcb/xcb_keysyms.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;xcb/xproto.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;GL/gl.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;GL/glx.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;stdlib.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;string.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;stdio.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;ftgl.h&gt;</span>

<span style="font-weight: bold"><span style="color: #000080">#ifndef</span></span> USE_LIBEV
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> USE_LIBEV <span style="color: #993399">1</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #000080">#ifndef</span></span> USE_POLL
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> USE_POLL <span style="color: #993399">0</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #000080">#ifndef</span></span> DEBUG_WINDOW_GEOMETRY
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> DEBUG_WINDOW_GEOMETRY <span style="color: #993399">1</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>

<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_POLL
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;poll.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#else</span></span>
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;sys/select.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_LIBEV
<span style="font-weight: bold"><span style="color: #000080">#include</span></span> <span style="color: #FF0000">&lt;ev.h&gt;</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>

<span style="font-style: italic"><span style="color: #9A1900">/* DEFINES */</span></span>
<span style="font-weight: bold"><span style="color: #000080">#ifndef</span></span> DO_DEBUG_EVENT_LOOP
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> DO_DEBUG_EVENT_LOOP <span style="color: #993399">1</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> <span style="color: #990000">(</span>DO_DEBUG_EVENT_LOOP<span style="color: #990000">&amp;</span><span style="color: #993399">1</span><span style="color: #990000">)</span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> DRI2EventBase<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>

<span style="font-weight: bold"><span style="color: #000080">#define</span></span> NUM_POLL_CHANNELS <span style="color: #993399">5</span>

<span style="font-style: italic"><span style="color: #9A1900">/* PROTOTYPES */</span></span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows</span><span style="color: #990000">;</span> <span style="font-style: italic"><span style="color: #9A1900">/* each display stores a double linked list of windows */</span></span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">poll_channels</span> <span style="color: #FF0000">{</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_POLL
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">pollfd</span> channel<span style="color: #990000">[</span>NUM_POLL_CHANNELS<span style="color: #990000">];</span>
<span style="font-weight: bold"><span style="color: #000080">#else</span></span>
        <span style="color: #008080">fd_set</span> fds<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">*</span>NUM_POLL_CHANNELS<span style="color: #990000">];</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
        <span style="color: #009900">int</span> nfds<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> timeout<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span> <span style="color: #FF0000">{</span>
        Display<span style="color: #990000">*</span> handle<span style="color: #990000">;</span>
        xcb_connection_t<span style="color: #990000">*</span> connection<span style="color: #990000">;</span>
        xcb_screen_t<span style="color: #990000">*</span> screen<span style="color: #990000">;</span>
        xcb_generic_event_t<span style="color: #990000">*</span> event<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span><span style="color: #990000">*</span> current_window<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows</span><span style="color: #990000">*</span> all_windows<span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_LIBEV
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_loop</span><span style="color: #990000">*</span> event_loop<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">watch_display_t</span> <span style="color: #FF0000">{</span>
                <span style="color: #008080">ev_io</span> displayio<span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> backref<span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span> watch_display<span style="color: #990000">;</span>
        <span style="color: #008080">ev_timer</span> timer<span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
        <span style="color: #009900">int</span> <span style="color: #990000">(*</span>loop<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*);</span>
        <span style="color: #009900">int</span> <span style="color: #990000">(*</span>select_window<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*,</span> <span style="color: #009900">int</span> win<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">info</span> <span style="color: #FF0000">{</span>
        <span style="color: #009900">int</span> version<span style="color: #990000">;</span>
        <span style="color: #008080">GLXFBConfig</span> config<span style="color: #990000">;</span>
        XVisualInfo<span style="color: #990000">*</span> visual<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_colormap_t</span> colormap<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">poll_channels</span> channels<span style="color: #990000">;</span>
        xcb_key_symbols_t<span style="color: #990000">*</span> keysymbols<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">geometry</span> <span style="color: #FF0000">{</span>
        <span style="color: #009900">float</span> x<span style="color: #990000">,</span>y<span style="color: #990000">,</span>w<span style="color: #990000">,</span>h<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">drawctxt</span> <span style="color: #FF0000">{</span>
        <span style="color: #008080">GLXContext</span> context<span style="color: #990000">;</span>
        <span style="color: #008080">GLXDrawable</span> drawable<span style="color: #990000">;</span>
        <span style="color: #008080">GLXWindow</span> window<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">context</span> <span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">drawctxt</span><span style="color: #990000">*</span> gl<span style="color: #990000">;</span>
        <span style="color: #009900">void</span><span style="color: #990000">*</span> attached<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> window_modes <span style="color: #FF0000">{</span> wm_size_changed<span style="color: #990000">=</span><span style="color: #993399">1</span><span style="color: #990000">,</span> wm_new_context<span style="color: #990000">=</span><span style="color: #993399">2</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span> <span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> display<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_window_t</span> handle<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">info</span><span style="color: #990000">*</span> info<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">context</span> ctxt<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">geometry</span> geom<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> mode<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> keyflags<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> <span style="color: #990000">(*</span>open<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> w<span style="color: #990000">);</span>
        <span style="color: #009900">int</span> <span style="color: #990000">(*</span>draw<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> w<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
</tt></pre></div></div>
<div class="sect2">
<h3 id="_window_lists">Window Lists</h3>
<div class="paragraph"><p>We might want to be able to handle several windows for one connection.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span> <span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span> <span style="color: #990000">*</span>prev<span style="color: #990000">,</span> <span style="color: #990000">*</span>next<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> mode<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span> window<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> list_modes <span style="color: #FF0000">{</span> lm_sorted<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">,</span> lm_list <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> list_element_mode <span style="color: #FF0000">{</span> lem_data_set<span style="color: #990000">=</span><span style="color: #993399">0</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows</span> <span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span> <span style="color: #990000">*</span>head<span style="color: #990000">;</span>
        <span style="color: #009900">unsigned</span> elsize<span style="color: #990000">,</span> space<span style="color: #990000">,</span> count<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> <span style="color: #008080">list_modes</span> mode<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> <span style="color: #FF0000">{</span> <span style="color: #009900">void</span><span style="color: #990000">*</span> base<span style="color: #990000">;</span> <span style="color: #009900">void</span><span style="color: #990000">*</span> el<span style="color: #990000">;</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span> <span style="color: #FF0000">{</span> <span style="color: #009900">void</span><span style="color: #990000">*</span> head<span style="color: #990000">;</span> <span style="color: #009900">unsigned</span> elsize<span style="color: #990000">;</span> <span style="color: #009900">unsigned</span> space<span style="color: #990000">;</span> <span style="color: #009900">unsigned</span> count<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> mode<span style="color: #990000">;</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span> <span style="color: #FF0000">{</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span><span style="color: #990000">*</span> prev<span style="color: #990000">,</span> <span style="color: #990000">*</span>next<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> mode<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>

<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">COPY_LIST_ELEMENT</span></span><span style="color: #990000">(</span>SRC<span style="color: #990000">,</span>DEST<span style="color: #990000">,</span>SIZE<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">do</span></span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
        <span style="color: #009900">char</span><span style="color: #990000">*</span> dp <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">char</span><span style="color: #990000">*)&amp;(</span>DEST<span style="color: #990000">-&gt;</span>mode<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        <span style="color: #009900">char</span><span style="color: #990000">*</span> sp <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">char</span><span style="color: #990000">*)&amp;(</span>SRC<span style="color: #990000">-&gt;</span>mode<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        <span style="color: #009900">int</span> ofs<span style="color: #990000">,</span> len<span style="color: #990000">;</span> <span style="color: #990000">\</span>
        dp <span style="color: #990000">+=</span> <span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>DEST<span style="color: #990000">-&gt;</span>mode<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        sp <span style="color: #990000">+=</span> <span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>SRC<span style="color: #990000">-&gt;</span>mode<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        ofs <span style="color: #990000">=</span> dp<span style="color: #990000">-((</span><span style="color: #009900">char</span><span style="color: #990000">*)</span>DEST<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        len <span style="color: #990000">=</span> SIZE<span style="color: #990000">,</span> len <span style="color: #990000">=</span> <span style="color: #990000">(</span>len<span style="color: #990000">&gt;</span>ofs<span style="color: #990000">)</span> <span style="color: #990000">?</span>len<span style="color: #990000">-</span>ofs <span style="color: #990000">:</span><span style="color: #993399">0</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
        DEST<span style="color: #990000">-&gt;</span>mode <span style="color: #990000">|=</span> <span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">&lt;&lt;</span>lem_data_set<span style="color: #990000">);</span> <span style="color: #990000">\</span>
        <span style="font-style: italic"><span style="color: #9A1900">/* printf("%p %p %d\n", dp, sp, len); */</span></span> <span style="color: #990000">\</span>
        <span style="font-weight: bold"><span style="color: #000000">memcpy</span></span><span style="color: #990000">(</span>dp<span style="color: #990000">,</span>sp<span style="color: #990000">,</span>len<span style="color: #990000">);</span> <span style="color: #990000">\</span>
<span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">)</span>

<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="color: #009900">void</span><span style="color: #990000">*</span> <span style="font-weight: bold"><span style="color: #000000">new_list</span></span><span style="color: #990000">(</span><span style="color: #009900">unsigned</span> n_elements<span style="color: #990000">,</span> <span style="color: #009900">unsigned</span> size<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>N<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> <span style="font-weight: bold"><span style="color: #000000">N</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">*</span> list<span style="color: #990000">,\</span>
        <span style="color: #009900">void</span><span style="color: #990000">*</span> element<span style="color: #990000">,</span> <span style="color: #009900">int</span><span style="color: #990000">(*</span>compar<span style="color: #990000">)(</span><span style="color: #009900">void</span><span style="color: #990000">*</span>a<span style="color: #990000">,</span><span style="color: #009900">void</span><span style="color: #990000">*</span>b<span style="color: #990000">))</span>
<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>search_element<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>add_element<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>list_mode<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #0000FF">extern</span></span> <span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>array_mode<span style="color: #990000">);</span>

<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">compare_window_elements</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">*</span> a<span style="color: #990000">,</span> <span style="color: #009900">void</span><span style="color: #990000">*</span> b<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">ADD_WINDOW</span></span><span style="color: #990000">(</span>DISPLAY<span style="color: #990000">,</span>WINDOW<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">do</span></span> <span style="color: #990000">\</span>
<span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span> W<span style="color: #990000">;</span> <span style="color: #990000">\</span>
        <span style="font-weight: bold"><span style="color: #000000">memset</span></span><span style="color: #990000">(&amp;</span>W<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>W<span style="color: #990000">));</span> <span style="color: #990000">\</span>
        W<span style="color: #990000">.</span>window <span style="color: #990000">=</span> WINDOW<span style="color: #990000">;</span> <span style="color: #990000">\</span>
        DISPLAY<span style="color: #990000">-&gt;</span>current_window <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">add_element</span></span><span style="color: #990000">(</span>DISPLAY<span style="color: #990000">-&gt;</span>all_windows<span style="color: #990000">,&amp;</span>W<span style="color: #990000">,</span>compare_window_elements<span style="color: #990000">).</span>el<span style="color: #990000">;\</span>
<span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
<span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">)</span>
</tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_extensions_query">Extensions Query</h3>
<div class="paragraph"><p>We might want to react on extension events. So we need the configuration.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">query_extensions_t</span> <span style="color: #FF0000">{</span>
        <span style="color: #008080">xcb_query_extension_cookie_t</span> ext<span style="color: #990000">;</span>
        xcb_query_extension_reply_t<span style="color: #990000">*</span> repl<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*</span> name<span style="color: #990000">;</span> <span style="color: #009900">int</span> nameLen<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">void</span> <span style="font-weight: bold"><span style="color: #000000">init_extension</span></span><span style="color: #990000">(</span>xcb_connection_t<span style="color: #990000">*</span> c<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">query_extensions_t</span> <span style="color: #990000">*</span>qext<span style="color: #990000">);</span>
<span style="color: #009900">void</span> <span style="font-weight: bold"><span style="color: #000000">init_extension</span></span><span style="color: #990000">(</span>xcb_connection_t<span style="color: #990000">*</span> c<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">query_extensions_t</span> <span style="color: #990000">*</span>qext<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        xcb_generic_error_t<span style="color: #990000">*</span> err<span style="color: #990000">;</span>
        qext<span style="color: #990000">-&gt;</span>repl <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_query_extension_reply</span></span><span style="color: #990000">(</span>c<span style="color: #990000">,</span> qext<span style="color: #990000">-&gt;</span>ext<span style="color: #990000">,&amp;</span>err<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>err<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">fputs</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"failed to query extension "</span><span style="color: #990000">,</span>stdout<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">fwrite</span></span><span style="color: #990000">(</span>qext<span style="color: #990000">-&gt;</span>name<span style="color: #990000">,</span>qext<span style="color: #990000">-&gt;</span>nameLen<span style="color: #990000">,</span><span style="color: #993399">1</span><span style="color: #990000">,</span>stdout<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">fputc</span></span><span style="color: #990000">(</span><span style="color: #FF0000">'</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">'</span><span style="color: #990000">,</span>stdout<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">fputs</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"Extension "</span><span style="color: #990000">,</span>stdout<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">fwrite</span></span><span style="color: #990000">(</span>qext<span style="color: #990000">-&gt;</span>name<span style="color: #990000">,</span>qext<span style="color: #990000">-&gt;</span>nameLen<span style="color: #990000">,</span><span style="color: #993399">1</span><span style="color: #990000">,</span>stdout<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">fprintf</span></span><span style="color: #990000">(</span>stdout<span style="color: #990000">,</span><span style="color: #FF0000">" parameters (op=%3d, ev=%3d, err=%3d)</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span>
                        qext<span style="color: #990000">-&gt;</span>repl<span style="color: #990000">-&gt;</span>major_opcode<span style="color: #990000">,</span>
                        qext<span style="color: #990000">-&gt;</span>repl<span style="color: #990000">-&gt;</span>first_event<span style="color: #990000">,</span>
                        qext<span style="color: #990000">-&gt;</span>repl<span style="color: #990000">-&gt;</span>first_error<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> <span style="color: #990000">(</span>DO_DEBUG_EVENT_LOOP<span style="color: #990000">&amp;</span><span style="color: #993399">1</span><span style="color: #990000">)</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">==(</span><span style="font-weight: bold"><span style="color: #000000">memcmp</span></span><span style="color: #990000">(</span>qext<span style="color: #990000">-&gt;</span>name<span style="color: #990000">,</span><span style="color: #FF0000">"DRI2"</span><span style="color: #990000">,</span>qext<span style="color: #990000">-&gt;</span>nameLen<span style="color: #990000">&lt;</span><span style="color: #993399">4</span><span style="color: #990000">?</span>qext<span style="color: #990000">-&gt;</span>nameLen<span style="color: #990000">:</span><span style="color: #993399">4</span><span style="color: #990000">)))</span>
                        DRI2EventBase<span style="color: #990000">=</span>qext<span style="color: #990000">-&gt;</span>repl<span style="color: #990000">-&gt;</span>first_event<span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
        <span style="color: #FF0000">}</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_functions">Functions</h3>
<div class="paragraph"><p>Some functions that are exported by this module.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">open_x11_window</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> win<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">std_x11_loop</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> display<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_LIBEV
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">void</span> <span style="font-weight: bold"><span style="color: #000000">std_x11_event</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_loop</span><span style="color: #990000">*</span> L<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_io</span><span style="color: #990000">*</span> w<span style="color: #990000">,</span> <span style="color: #009900">int</span> revents<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #0000FF">typedef</span></span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #FF0000">{</span> <span style="color: #009900">unsigned</span> <span style="color: #009900">char</span> code<span style="color: #990000">[</span><span style="color: #993399">8</span><span style="color: #990000">];</span> <span style="color: #FF0000">}</span> utf8_t<span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #008080">utf8_t</span> <span style="font-weight: bold"><span style="color: #000000">get_utf8_from_ucs</span></span><span style="color: #990000">(</span><span style="color: #008080">uint32_t</span> cp<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">test_draw</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> win<span style="color: #990000">);</span>

<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">wait_for_event</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> d<span style="color: #990000">);</span>

<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">select_window</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> display<span style="color: #990000">,</span> <span style="color: #009900">int</span> win<span style="color: #990000">);</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_the_main_function">The Main function</h3>
<div class="paragraph"><p>This function contains the test code for the library functions and is not thought
to be exported if a library is build from this source.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-style: italic"><span style="color: #9A1900">/* static struct display* new_display(); */</span></span>
<span style="font-style: italic"><span style="color: #9A1900">/* static struct window* new_window(); */</span></span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">info</span><span style="color: #990000">*</span> <span style="font-weight: bold"><span style="color: #000000">new_info</span></span><span style="color: #990000">();</span>
<span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">drawctxt</span><span style="color: #990000">*</span> <span style="font-weight: bold"><span style="color: #000000">new_drawctxt</span></span><span style="color: #990000">();</span>
<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">main</span></span><span style="color: #990000">(</span><span style="color: #009900">int</span> argc<span style="color: #990000">,</span> <span style="color: #009900">char</span><span style="color: #990000">**</span> argv<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> <span style="color: #990000">(</span>TEST_LIST<span style="color: #990000">&gt;</span><span style="color: #993399">0</span><span style="color: #990000">)</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span> win<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> D <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">new_display</span></span><span style="color: #990000">();</span>
        <span style="color: #009900">int</span> i<span style="color: #990000">;</span>

        D<span style="color: #990000">-&gt;</span>all_windows <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">new_list</span></span><span style="color: #990000">(</span><span style="color: #993399">10</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">));</span>
        <span style="font-weight: bold"><span style="color: #000000">memset</span></span><span style="color: #990000">(&amp;</span>win<span style="color: #990000">,</span><span style="color: #993399">0x0</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>win<span style="color: #990000">));</span>
        win<span style="color: #990000">.</span>display <span style="color: #990000">=</span> D<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">for</span></span> <span style="color: #990000">(</span>i<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>i<span style="color: #990000">&lt;</span><span style="color: #993399">10</span><span style="color: #990000">;</span>i<span style="color: #990000">++)</span> <span style="color: #FF0000">{</span>
                win<span style="color: #990000">.</span>handle <span style="color: #990000">=</span> i<span style="color: #990000">;</span> <span style="font-weight: bold"><span style="color: #000000">ADD_WINDOW</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span>win<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">for</span></span> <span style="color: #990000">(</span>i<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span> i<span style="color: #990000">&lt;</span>D<span style="color: #990000">-&gt;</span>all_windows<span style="color: #990000">-&gt;</span>count<span style="color: #990000">;</span> <span style="color: #990000">++</span>i<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="color: #009900">int</span> handle <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">int</span><span style="color: #990000">)(</span>D<span style="color: #990000">-&gt;</span>all_windows<span style="color: #990000">-&gt;</span>head<span style="color: #990000">[</span>i<span style="color: #990000">].</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"%3d: %3d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> i<span style="color: #990000">,</span> handle<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000080">#else</span></span>
        <span style="color: #009900">int</span> i<span style="color: #990000">,</span>n<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> minKey<span style="color: #990000">,</span> maxKey<span style="color: #990000">;</span>
        Display<span style="color: #990000">*</span> D<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*</span> dn<span style="color: #990000">;</span>
        GLXFBConfig<span style="color: #990000">*</span> cfgs<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span> win<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span> display<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> defScreen<span style="color: #990000">;</span>

        <span style="font-weight: bold"><span style="color: #000000">memset</span></span><span style="color: #990000">(&amp;</span>win<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>win<span style="color: #990000">));</span>
        <span style="font-weight: bold"><span style="color: #000000">memset</span></span><span style="color: #990000">(&amp;</span>display<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>display<span style="color: #990000">));</span>
        win<span style="color: #990000">.</span>display <span style="color: #990000">=</span> <span style="color: #990000">&amp;</span>display<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>select_window <span style="color: #990000">=</span> select_window<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>all_windows <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">new_list</span></span><span style="color: #990000">(</span><span style="color: #993399">2</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span><span style="color: #990000">));</span>
        win<span style="color: #990000">.</span>info <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">new_info</span></span><span style="color: #990000">();</span>
        win<span style="color: #990000">.</span>draw <span style="color: #990000">=</span> test_draw<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">new_drawctxt</span></span><span style="color: #990000">();</span>
        win<span style="color: #990000">.</span>open <span style="color: #990000">=</span> open_x11_window<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>loop <span style="color: #990000">=</span> wait_for_event<span style="color: #990000">;</span>
        D <span style="color: #990000">=</span> win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>handle <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">XOpenDisplay</span></span><span style="color: #990000">(</span>dn<span style="color: #990000">=</span><span style="font-weight: bold"><span style="color: #000000">getenv</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"DISPLAY"</span><span style="color: #990000">));</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(!</span>D<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"cannot connect to display </span><span style="color: #CC33CC">\"</span><span style="color: #FF0000">%s</span><span style="color: #CC33CC">\"\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span>
                        dn <span style="color: #990000">?</span>dn <span style="color: #990000">:</span><span style="color: #FF0000">"(null)"</span><span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #000000">exit</span></span><span style="color: #990000">(-</span><span style="color: #993399">1</span><span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">XGetXCBConnection</span></span><span style="color: #990000">(</span>D<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">XSetEventQueueOwner</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span>XCBOwnsEventQueue<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>watch_display<span style="color: #990000">.</span>backref <span style="color: #990000">=</span> win<span style="color: #990000">.</span>display<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #000000">ev_io_init</span></span><span style="color: #990000">(</span>
                <span style="color: #990000">&amp;</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>watch_display<span style="color: #990000">.</span>displayio<span style="color: #990000">,</span>
                std_x11_event<span style="color: #990000">,</span>
                <span style="font-weight: bold"><span style="color: #000000">xcb_get_file_descriptor</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">),</span>
                EV_READ<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>event_loop <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">ev_default_loop</span></span><span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">ev_io_start</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>event_loop<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>watch_display<span style="color: #990000">.</span>displayio<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">XDisplayKeycodes</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>minKey<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>maxKey<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>keysymbols <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_key_symbols_alloc</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"Display Keycodes [%02x,%02x]</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> minKey<span style="color: #990000">,</span> maxKey<span style="color: #990000">);</span>

<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> <span style="color: #FF0000">{</span>qext_num<span style="color: #990000">=</span><span style="color: #993399">32</span><span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #008080">uint32_t</span> fill<span style="color: #990000">,</span> num<span style="color: #990000">=</span>qext_num<span style="color: #990000">,</span> pos<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">query_extensions_t</span> qext<span style="color: #990000">[</span>qext_num<span style="color: #990000">];</span>
        <span style="color: #008080">xcb_list_extensions_cookie_t</span> list<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_list_extensions_reply_t</span> <span style="color: #990000">*</span>lr<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_generic_error_t</span> <span style="color: #990000">*</span>err<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_str_iterator_t</span> name_i<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> go <span style="color: #990000">=</span> <span style="color: #993399">1</span><span style="color: #990000">;</span>
        list <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_list_extensions</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">);</span>
        lr <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_list_extensions_reply</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,</span>
                list<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>err<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(!</span>err<span style="color: #990000">)</span> go<span style="color: #990000">=</span><span style="color: #993399">1</span><span style="color: #990000">;</span> <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> go<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>
        num<span style="color: #990000">=</span><span style="color: #993399">32</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>go<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                name_i <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_list_extensions_names_iterator</span></span><span style="color: #990000">(</span>lr<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        fill<span style="color: #990000">=</span>pos<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">while</span></span> <span style="color: #990000">(</span>go<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                go <span style="color: #990000">=</span> <span style="color: #990000">(</span>name_i<span style="color: #990000">.</span>data <span style="color: #990000">!=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_str_end</span></span><span style="color: #990000">(</span>name_i<span style="color: #990000">).</span>data<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>go<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                        qext<span style="color: #990000">[</span>fill<span style="color: #990000">].</span>name <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_str_name</span></span><span style="color: #990000">(</span>name_i<span style="color: #990000">.</span>data<span style="color: #990000">);</span>
                        qext<span style="color: #990000">[</span>fill<span style="color: #990000">].</span>nameLen <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_str_name_length</span></span><span style="color: #990000">(</span>name_i<span style="color: #990000">.</span>data<span style="color: #990000">);</span>
                        qext<span style="color: #990000">[</span>fill<span style="color: #990000">].</span>ext <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_query_extension</span></span><span style="color: #990000">(</span>
                                win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,</span>
                                qext<span style="color: #990000">[</span>fill<span style="color: #990000">].</span>nameLen<span style="color: #990000">,</span> qext<span style="color: #990000">[</span>fill<span style="color: #990000">].</span>name<span style="color: #990000">);</span>
                        <span style="font-weight: bold"><span style="color: #000000">xcb_str_next</span></span><span style="color: #990000">(&amp;</span>name_i<span style="color: #990000">);</span>
                        <span style="color: #990000">++</span>fill<span style="color: #990000">;</span>
                <span style="color: #FF0000">}</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>fill<span style="color: #990000">==</span>num<span style="color: #990000">)</span> <span style="color: #FF0000">{</span> fill<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span> <span style="font-weight: bold"><span style="color: #0000FF">for</span></span><span style="color: #990000">(</span>pos<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>pos<span style="color: #990000">&lt;</span>num<span style="color: #990000">;++</span>pos<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                        <span style="font-weight: bold"><span style="color: #000000">init_extension</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,&amp;</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">]);</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">].</span>repl<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #000000">free</span></span><span style="color: #990000">(</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">].</span>repl<span style="color: #990000">);</span>
                <span style="color: #FF0000">}}</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>fill<span style="color: #990000">&gt;</span><span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">for</span></span><span style="color: #990000">(</span>pos<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>pos<span style="color: #990000">&lt;</span>fill<span style="color: #990000">;++</span>pos<span style="color: #990000">)</span><span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">init_extension</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,&amp;</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">]);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">].</span>repl<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #000000">free</span></span><span style="color: #990000">(</span>qext<span style="color: #990000">[</span>pos<span style="color: #990000">].</span>repl<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #000000">free</span></span><span style="color: #990000">(</span>lr<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span>

        defScreen <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">DefaultScreen</span></span><span style="color: #990000">(</span>D<span style="color: #990000">);</span>
        <span style="color: #008080">xcb_screen_iterator_t</span> screen_iter <span style="color: #990000">=</span>
                <span style="font-weight: bold"><span style="color: #000000">xcb_setup_roots_iterator</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #000000">xcb_get_setup</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">));</span>
        <span style="font-weight: bold"><span style="color: #0000FF">for</span></span><span style="color: #990000">(</span>i <span style="color: #990000">=</span> defScreen<span style="color: #990000">;</span>
                screen_iter<span style="color: #990000">.</span>rem <span style="color: #990000">&amp;&amp;</span> i <span style="color: #990000">&gt;</span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
                <span style="color: #990000">--</span>i<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">xcb_screen_next</span></span><span style="color: #990000">(&amp;</span>screen_iter<span style="color: #990000">));</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>screen <span style="color: #990000">=</span> screen_iter<span style="color: #990000">.</span>data<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>geom<span style="color: #990000">.</span>w <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>screen<span style="color: #990000">-&gt;</span>width_in_pixels<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>geom<span style="color: #990000">.</span>h <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>screen<span style="color: #990000">-&gt;</span>height_in_pixels<span style="color: #990000">;</span>
<span style="color: #FF0000">{</span>
        <span style="color: #009900">int</span> hi<span style="color: #990000">,</span> lo<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span> False <span style="color: #990000">==</span> <span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #000000">glXQueryVersion</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>hi<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>lo<span style="color: #990000">))</span> <span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"Failed to query GLX for Display: %p</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> D<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>version <span style="color: #990000">=</span> <span style="color: #990000">(</span>hi<span style="color: #990000">&lt;&lt;</span><span style="color: #993399">4</span><span style="color: #990000">)</span> <span style="color: #990000">|</span> <span style="color: #990000">(</span>lo<span style="color: #990000">&amp;</span><span style="color: #993399">0xf</span><span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"GLX %d.%d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> hi<span style="color: #990000">,</span> lo<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"GLX Version: %d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>version<span style="color: #990000">);</span>

<span style="color: #FF0000">{</span>
        <span style="color: #009900">int</span> attr<span style="color: #990000">[]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">{</span> GLX_DOUBLEBUFFER<span style="color: #990000">,</span> True<span style="color: #990000">,</span>
                GLX_X_VISUAL_TYPE<span style="color: #990000">,</span> GLX_TRUE_COLOR<span style="color: #990000">,</span>
                GLX_X_RENDERABLE<span style="color: #990000">,</span> True<span style="color: #990000">,</span>
                None
        <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        cfgs <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">glXChooseFBConfig</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">,</span>attr<span style="color: #990000">,&amp;</span>n<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>n<span style="color: #990000">&gt;</span><span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>config <span style="color: #990000">=</span> cfgs<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">];</span>
                win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>visual <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">glXGetVisualFromFBConfig</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span>win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>config<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #000000">XFree</span></span><span style="color: #990000">(</span>cfgs<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"found %d configs</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> n<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>context <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">glXCreateNewContext</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span>win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>config<span style="color: #990000">,</span> GLX_RGBA_TYPE<span style="color: #990000">,</span> <span style="color: #993399">0</span><span style="color: #990000">,</span> True<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>mode <span style="color: #990000">|=</span> wm_new_context<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>colormap <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_generate_id</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">xcb_create_colormap</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,</span> XCB_COLORMAP_ALLOC_NONE<span style="color: #990000">,</span>
                win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>colormap<span style="color: #990000">,</span> win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>screen<span style="color: #990000">-&gt;</span>root<span style="color: #990000">,</span>
                win<span style="color: #990000">.</span>info<span style="color: #990000">-&gt;</span>visual<span style="color: #990000">-&gt;</span>visualid<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span><span style="font-weight: bold"><span style="color: #000000">open</span></span><span style="color: #990000">(&amp;</span>win<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">ADD_WINDOW</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">,</span>win<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>window <span style="color: #990000">=</span> win<span style="color: #990000">.</span>handle<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #000000">glXMakeContextCurrent</span></span><span style="color: #990000">(</span>D<span style="color: #990000">,</span>win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>window<span style="color: #990000">,</span>win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>window<span style="color: #990000">,</span>win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>context<span style="color: #990000">);</span>
        win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>drawable <span style="color: #990000">=</span> win<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>window<span style="color: #990000">;</span>
        win<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span><span style="font-weight: bold"><span style="color: #000000">loop</span></span><span style="color: #990000">(</span>win<span style="color: #990000">.</span>display<span style="color: #990000">);</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_creating_types">Creating Types</h3>
<div class="paragraph"><p>In general a type can be created by <tt>calloc(1,sizeof(T))</tt>.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">new_F</span></span><span style="color: #990000">(</span>N<span style="color: #990000">,</span>TN<span style="color: #990000">)</span> TN<span style="color: #990000">*</span> new_ ## <span style="font-weight: bold"><span style="color: #000000">N</span></span><span style="color: #990000">()</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
        TN<span style="color: #990000">*</span> obj <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">calloc</span></span><span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>TN<span style="color: #990000">));</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> obj<span style="color: #990000">;</span> <span style="color: #FF0000">}</span><span style="color: #990000">\</span>

<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">new_SF</span></span><span style="color: #990000">(</span>N<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #000000">new_F</span></span><span style="color: #990000">(</span>N<span style="color: #990000">,</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">N</span><span style="color: #990000">)</span>

<span style="font-style: italic"><span style="color: #9A1900">/* new_SF(display) */</span></span>
<span style="font-weight: bold"><span style="color: #000000">new_SF</span></span><span style="color: #990000">(</span>info<span style="color: #990000">)</span>
<span style="font-style: italic"><span style="color: #9A1900">/* new_SF(window) */</span></span>
<span style="font-weight: bold"><span style="color: #000000">new_SF</span></span><span style="color: #990000">(</span>drawctxt<span style="color: #990000">)</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_x11_implementation_8201_8212_8201_open">X11 Implementation&#8201;&#8212;&#8201;open</h3>
<div class="paragraph"><p>Window handle creation in an X11 System.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>G<span style="color: #990000">)</span> <span style="color: #990000">(</span><span style="color: #009900">int</span><span style="color: #990000">)(</span>G<span style="color: #990000">.</span>x<span style="color: #990000">+.</span><span style="color: #993399">5</span><span style="color: #990000">),</span> <span style="color: #990000">(</span><span style="color: #009900">int</span><span style="color: #990000">)(</span>G<span style="color: #990000">.</span>y<span style="color: #990000">+.</span><span style="color: #993399">5</span><span style="color: #990000">),\</span>
<span style="color: #990000">(</span><span style="color: #009900">unsigned</span> <span style="color: #009900">int</span><span style="color: #990000">)(</span>G<span style="color: #990000">.</span>w<span style="color: #990000">+.</span><span style="color: #993399">5</span><span style="color: #990000">),</span> <span style="color: #990000">(</span><span style="color: #009900">unsigned</span> <span style="color: #009900">int</span><span style="color: #990000">)(</span>G<span style="color: #990000">.</span>h<span style="color: #990000">+.</span><span style="color: #993399">5</span><span style="color: #990000">)</span>
<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">open_x11_window</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> win<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="color: #008080">uint32_t</span> eventmask <span style="color: #990000">=</span> XCB_EVENT_MASK_EXPOSURE<span style="color: #990000">|</span>XCB_EVENT_MASK_KEY_PRESS<span style="color: #990000">|\</span>
                XCB_EVENT_MASK_STRUCTURE_NOTIFY<span style="color: #990000">;</span>
        <span style="color: #008080">uint32_t</span> valuelist<span style="color: #990000">[]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">{</span> XCB_NONE<span style="color: #990000">,</span> eventmask<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>info<span style="color: #990000">-&gt;</span>colormap<span style="color: #990000">,</span> <span style="color: #993399">0</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #008080">uint32_t</span> valuemask <span style="color: #990000">=</span> XCB_CW_EVENT_MASK<span style="color: #990000">|</span>XCB_CW_COLORMAP<span style="color: #990000">|\</span>
                XCB_CW_BACK_PIXMAP<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_void_cookie_t</span> cookies<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">];</span>
        xcb_connection_t<span style="color: #990000">*</span> c <span style="color: #990000">=</span> win<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">;</span>
        <span style="color: #008080">xcb_generic_error_t</span> <span style="color: #990000">*</span>err<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>win<span style="color: #990000">-&gt;</span>handle <span style="color: #990000">!=</span> <span style="color: #993399">0x0</span><span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> win<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">;</span>

        win<span style="color: #990000">-&gt;</span>handle <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_generate_id</span></span><span style="color: #990000">(</span>win<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">);</span>
        cookies<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_create_window</span></span><span style="color: #990000">(</span>win<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,</span>
                XCB_COPY_FROM_PARENT<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>screen<span style="color: #990000">-&gt;</span>root<span style="color: #990000">,</span>
                <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>win<span style="color: #990000">-&gt;</span>geom<span style="color: #990000">),</span> <span style="color: #993399">0</span><span style="color: #990000">,</span>
                XCB_WINDOW_CLASS_INPUT_OUTPUT<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>info<span style="color: #990000">-&gt;</span>visual<span style="color: #990000">-&gt;</span>visualid<span style="color: #990000">,</span>
                valuemask<span style="color: #990000">,</span> valuelist<span style="color: #990000">);</span>
        cookies<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_map_window</span></span><span style="color: #990000">(</span>win<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span><span style="color: #993399">0x0</span> <span style="color: #990000">!=</span> <span style="color: #990000">(</span>err<span style="color: #990000">=</span><span style="font-weight: bold"><span style="color: #000000">xcb_request_check</span></span><span style="color: #990000">(</span>c<span style="color: #990000">,</span>cookies<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">])))</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"request (%03d,%03d) failed with error %3d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span>
                        err<span style="color: #990000">-&gt;</span>pad0<span style="color: #990000">,</span> err<span style="color: #990000">-&gt;</span>major_code<span style="color: #990000">,</span> err<span style="color: #990000">-&gt;</span>error_code<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span><span style="color: #993399">0x0</span> <span style="color: #990000">!=</span> <span style="color: #990000">(</span>err<span style="color: #990000">=</span><span style="font-weight: bold"><span style="color: #000000">xcb_request_check</span></span><span style="color: #990000">(</span>c<span style="color: #990000">,</span>cookies<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">])))</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"request (%03d,%03d) failed with error %3d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span>
                        err<span style="color: #990000">-&gt;</span>pad0<span style="color: #990000">,</span> err<span style="color: #990000">-&gt;</span>major_code<span style="color: #990000">,</span> err<span style="color: #990000">-&gt;</span>error_code<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">2</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_test_implementation">Test implementation</h3>
<div class="paragraph"><p>The test implementation of the window draw function, also needs some special
context data, that is initialized on demand.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> test_context_numbers <span style="color: #FF0000">{</span> tc_num_textures<span style="color: #990000">=</span><span style="color: #993399">1</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">test_context</span>
<span style="color: #FF0000">{</span>
        FTGLfont<span style="color: #990000">*</span> font<span style="color: #990000">;</span>
        <span style="color: #009900">char</span><span style="color: #990000">*</span> font_path<span style="color: #990000">;</span>
        <span style="color: #008080">GLuint</span> texture<span style="color: #990000">[</span>tc_num_textures<span style="color: #990000">];</span>
        <span style="color: #009900">int</span> status<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span><span style="color: #990000">;</span>
<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">test_draw</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> w<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #009900">int</span> cmode<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="color: #008080">FTGLfont</span> <span style="color: #990000">*</span>font<span style="color: #990000">=</span><span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*</span> font_path<span style="color: #990000">=</span><span style="color: #FF0000">"font.ttf"</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span> font<span style="color: #990000">==</span><span style="color: #993399">0x0</span> <span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                font <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">ftglCreateTextureFont</span></span><span style="color: #990000">(</span>font_path<span style="color: #990000">);</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">switch</span></span> <span style="color: #990000">(</span>cmode<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="color: #993399">0</span><span style="color: #990000">:</span> <span style="font-weight: bold"><span style="color: #000000">glClearColor</span></span><span style="color: #990000">(.</span>0f<span style="color: #990000">,.</span>5f<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">.</span>8f<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">.</span>5f<span style="color: #990000">);</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="color: #993399">1</span><span style="color: #990000">:</span> <span style="font-weight: bold"><span style="color: #000000">glClearColor</span></span><span style="color: #990000">(.</span>8f<span style="color: #990000">,.</span>5f<span style="color: #990000">,.</span>0f<span style="color: #990000">,.</span>5f<span style="color: #990000">);</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="color: #993399">2</span><span style="color: #990000">:</span> <span style="font-weight: bold"><span style="color: #000000">glClearColor</span></span><span style="color: #990000">(.</span>5f<span style="color: #990000">,.</span>8f<span style="color: #990000">,.</span>0f<span style="color: #990000">,.</span>5f<span style="color: #990000">);</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="color: #993399">3</span><span style="color: #990000">:</span> <span style="font-weight: bold"><span style="color: #000000">glClearColor</span></span><span style="color: #990000">(.</span>5f<span style="color: #990000">,.</span>0f<span style="color: #990000">,.</span>8f<span style="color: #990000">,.</span>5f<span style="color: #990000">);</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        cmode <span style="color: #990000">=</span> <span style="color: #990000">(</span>cmode<span style="color: #990000">&gt;</span><span style="color: #993399">2</span><span style="color: #990000">)?</span><span style="color: #993399">0</span><span style="color: #990000">:</span>cmode<span style="color: #990000">+</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #000000">glClear</span></span><span style="color: #990000">(</span>GL_COLOR_BUFFER_BIT<span style="color: #990000">|</span>GL_DEPTH_BUFFER_BIT<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glMatrixMode</span></span><span style="color: #990000">(</span>GL_PROJECTION<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glLoadIdentity</span></span><span style="color: #990000">();</span>
        <span style="font-weight: bold"><span style="color: #000000">glOrtho</span></span><span style="color: #990000">(-</span><span style="color: #993399">1000</span><span style="color: #990000">,</span><span style="color: #993399">1000</span><span style="color: #990000">,</span><span style="color: #993399">1000</span><span style="color: #990000">,-</span><span style="color: #993399">1000</span><span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">,</span><span style="color: #993399">1</span><span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glColor4f</span></span><span style="color: #990000">(.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glBegin</span></span><span style="color: #990000">(</span>GL_QUADS<span style="color: #990000">);</span>

        <span style="font-weight: bold"><span style="color: #000000">glVertex3f</span></span><span style="color: #990000">(</span><span style="color: #993399">10</span><span style="color: #990000">.</span>0f<span style="color: #990000">,</span><span style="color: #993399">10</span><span style="color: #990000">.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glVertex3f</span></span><span style="color: #990000">(</span><span style="color: #993399">400</span><span style="color: #990000">.</span>0f<span style="color: #990000">,</span><span style="color: #993399">10</span><span style="color: #990000">.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glVertex3f</span></span><span style="color: #990000">(</span><span style="color: #993399">400</span><span style="color: #990000">.</span>0f<span style="color: #990000">,</span><span style="color: #993399">400</span><span style="color: #990000">.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #000000">glVertex3f</span></span><span style="color: #990000">(</span><span style="color: #993399">10</span><span style="color: #990000">.</span>0f<span style="color: #990000">,</span><span style="color: #993399">400</span><span style="color: #990000">.</span>0f<span style="color: #990000">,.</span>0f<span style="color: #990000">);</span>

        <span style="font-weight: bold"><span style="color: #000000">glEnd</span></span><span style="color: #990000">();</span>
        <span style="font-weight: bold"><span style="color: #000000">glXSwapBuffers</span></span><span style="color: #990000">(</span>w<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">,</span> w<span style="color: #990000">-&gt;</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>window<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_standard_loop">Standard loop</h3>
<div class="paragraph"><p>The standard loop is used when there are no other input sources. Later, this
might be modified to poll from other filedescriptors too.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000080">#if</span></span> <span style="color: #990000">(</span>DO_DEBUG_EVENT_LOOP<span style="color: #990000">&amp;</span><span style="color: #993399">1</span><span style="color: #990000">)</span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">DEBUG_EVENT_LOOP_EVENT</span></span><span style="color: #990000">(</span>E<span style="color: #990000">,</span>display<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">do</span></span> <span style="color: #990000">\</span>
        <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                <span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*</span> event_name_table<span style="color: #990000">[</span><span style="color: #993399">0x7f</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                        <span style="color: #993399">0x0</span><span style="color: #990000">,</span> <span style="color: #993399">0x0</span> <span style="color: #990000">\</span>
                <span style="color: #FF0000">}</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                <span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*</span> event_name <span style="color: #990000">=</span> event_name_table<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">];</span> <span style="color: #990000">\</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span> event_name_table<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]==</span>event_name_table<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                        <span style="color: #009900">int</span> s<span style="color: #990000">,</span>n<span style="color: #990000">,</span>l<span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"unknown"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        n<span style="color: #990000">=(</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span>event_name_table<span style="color: #990000">)/</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*));</span> <span style="color: #990000">\</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">for</span></span> <span style="color: #990000">(</span>l<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">,</span>s<span style="color: #990000">=</span><span style="color: #993399">1</span><span style="color: #990000">;</span> s<span style="color: #990000">&lt;</span>n<span style="color: #990000">;</span> s<span style="color: #990000">+=</span>l<span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>l<span style="color: #990000">==</span><span style="color: #993399">0</span><span style="color: #990000">)</span>l<span style="color: #990000">=</span><span style="color: #993399">1</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                                        l<span style="color: #990000">*=</span><span style="color: #993399">2</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                                        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>s<span style="color: #990000">+</span>l<span style="color: #990000">&gt;</span>n<span style="color: #990000">)</span> l<span style="color: #990000">=</span>n<span style="color: #990000">-</span>s<span style="color: #990000">;</span> <span style="color: #990000">\</span>
                                <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
                                <span style="font-weight: bold"><span style="color: #000000">memcpy</span></span><span style="color: #990000">(</span>event_name_table<span style="color: #990000">+</span>s<span style="color: #990000">,</span>event_name_table<span style="color: #990000">,</span>l<span style="color: #990000">*</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">const</span></span> <span style="color: #009900">char</span><span style="color: #990000">*));</span> <span style="color: #990000">\</span>
                        <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"error"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"reply"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span><span style="color: #993399">0xc</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"expose"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span><span style="color: #993399">0x2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"key-press"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span>MapNotify<span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"map"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span>UnmapNotify<span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"unmap"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        event_name_table<span style="color: #990000">[</span>ConfigureNotify<span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"configure"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>DRI2EventBase<span style="color: #990000">!=</span><span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                                event_name_table<span style="color: #990000">[</span>DRI2EventBase<span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"DRI2 Swap Complete"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                                event_name_table<span style="color: #990000">[</span>DRI2EventBase<span style="color: #990000">+</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #FF0000">"DRI2 Invalidate Buffers"</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                        <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
                <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
                event_name <span style="color: #990000">=</span> event_name_table<span style="color: #990000">[</span>E<span style="color: #990000">-&gt;</span>response_type <span style="color: #990000">&amp;</span> <span style="color: #990000">~</span><span style="color: #993399">0x80</span><span style="color: #990000">];</span> <span style="color: #990000">\</span>
                <span style="font-weight: bold"><span style="color: #000000">fprintf</span></span><span style="color: #990000">(</span>stderr<span style="color: #990000">,</span> <span style="color: #FF0000">"event:%20s(%02d) %d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> event_name<span style="color: #990000">?</span>event_name<span style="color: #990000">:</span><span style="color: #FF0000">"*FATAL*"</span><span style="color: #990000">,</span> E<span style="color: #990000">-&gt;</span>response_type<span style="color: #990000">,</span> <span style="color: #990000">\</span>
                        <span style="font-weight: bold"><span style="color: #000000">xcb_connection_has_error</span></span><span style="color: #990000">(</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">));</span> <span style="color: #990000">\</span>
        <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">while</span></span> <span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">)</span>
<span style="font-weight: bold"><span style="color: #000080">#else</span></span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">DEBUG_EVENT_LOOP_EVENT</span></span><span style="color: #990000">(</span>E<span style="color: #990000">,</span>display<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">do</span></span> <span style="color: #FF0000">{</span> <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">)</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>

<span style="font-weight: bold"><span style="color: #000080">#if</span></span> USE_LIBEV
<span style="color: #009900">void</span> <span style="font-weight: bold"><span style="color: #000000">std_x11_event</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_loop</span><span style="color: #990000">*</span> L<span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_io</span><span style="color: #990000">*</span> w<span style="color: #990000">,</span> <span style="color: #009900">int</span> revents<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">watch_display_t</span> <span style="color: #990000">*</span>x <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">watch_display_t</span><span style="color: #990000">*)</span>w<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> d <span style="color: #990000">=</span> x<span style="color: #990000">-&gt;</span>backref<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #000000">std_x11_loop</span></span><span style="color: #990000">(</span>d<span style="color: #990000">);</span>
<span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">STDX11LOOP_SelectWindow</span></span><span style="color: #990000">(</span>WIN<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">do</span></span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">(</span>cwh<span style="color: #990000">!=</span>WIN<span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">!=</span><span style="font-weight: bold"><span style="color: #000000">change_window</span></span><span style="color: #990000">(</span>display<span style="color: #990000">,</span>WIN<span style="color: #990000">))</span> <span style="color: #FF0000">{</span> <span style="color: #990000">\</span>
                        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"the window %d not found</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> WIN<span style="color: #990000">);</span> <span style="color: #990000">\</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span> <span style="color: #990000">\</span>
                <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
                cw <span style="color: #990000">=</span> display<span style="color: #990000">-&gt;</span>current_window<span style="color: #990000">;</span> <span style="color: #990000">\</span>
        <span style="color: #FF0000">}</span> <span style="color: #990000">\</span>
<span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span><span style="color: #993399">0</span><span style="color: #990000">)</span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">SQR</span></span><span style="color: #990000">(</span>X<span style="color: #990000">)</span> <span style="color: #990000">((</span>X<span style="color: #990000">)*(</span>X<span style="color: #990000">))</span>
<span style="font-weight: bold"><span style="color: #000080">#define</span></span> <span style="font-weight: bold"><span style="color: #000000">GEOM_DELTA</span></span><span style="color: #990000">(</span>A<span style="color: #990000">,</span>B<span style="color: #990000">)</span>  <span style="color: #990000">\</span>
        <span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #000000">SQR</span></span><span style="color: #990000">(</span>A<span style="color: #990000">.</span>x<span style="color: #990000">-</span>B<span style="color: #990000">.</span>x<span style="color: #990000">)+</span><span style="font-weight: bold"><span style="color: #000000">SQR</span></span><span style="color: #990000">(</span>A<span style="color: #990000">.</span>y<span style="color: #990000">-</span>B<span style="color: #990000">.</span>y<span style="color: #990000">)+</span><span style="font-weight: bold"><span style="color: #000000">SQR</span></span><span style="color: #990000">(</span>A<span style="color: #990000">.</span>w<span style="color: #990000">-</span>B<span style="color: #990000">.</span>w<span style="color: #990000">)+</span><span style="font-weight: bold"><span style="color: #000000">SQR</span></span><span style="color: #990000">(</span>A<span style="color: #990000">.</span>h<span style="color: #990000">-</span>B<span style="color: #990000">.</span>h<span style="color: #990000">))</span>
<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">std_x11_loop</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> display<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="color: #009900">int</span> running <span style="color: #990000">=</span> <span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span><span style="color: #990000">*</span> cw<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> win<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> cwh<span style="color: #990000">;</span>
        xcb_generic_event_t<span style="color: #990000">*</span>E<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> <span style="color: #990000">(*</span>change_window<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> display<span style="color: #990000">,</span> <span style="color: #009900">int</span> w<span style="color: #990000">);</span>

        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(!</span>display<span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"no display structure to work on</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">);</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span> <span style="color: #FF0000">}</span>
        cw <span style="color: #990000">=</span> display<span style="color: #990000">-&gt;</span>current_window<span style="color: #990000">;</span>
        win <span style="color: #990000">=</span> <span style="color: #990000">&amp;</span>cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">;</span>
        cwh <span style="color: #990000">=</span> <span style="color: #990000">(</span>cw<span style="color: #990000">)</span> <span style="color: #990000">?</span>cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">:</span><span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        change_window <span style="color: #990000">=</span> display<span style="color: #990000">-&gt;</span>select_window<span style="color: #990000">;</span>

        <span style="font-weight: bold"><span style="color: #0000FF">while</span></span><span style="color: #990000">(</span>running<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                E <span style="color: #990000">=</span> display<span style="color: #990000">-&gt;</span>event <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_poll_for_event</span></span><span style="color: #990000">(</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(!</span>E<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #000000">DEBUG_EVENT_LOOP_EVENT</span></span><span style="color: #990000">(</span>E<span style="color: #990000">,</span>display<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">switch</span></span> <span style="color: #990000">(</span>E<span style="color: #990000">-&gt;</span>response_type <span style="color: #990000">&amp;</span> <span style="color: #990000">~</span><span style="color: #993399">0x80</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> XCB_KEY_PRESS<span style="color: #990000">:</span><span style="color: #FF0000">{</span>
                                xcb_key_press_event_t<span style="color: #990000">*</span> key <span style="color: #990000">=(</span>xcb_key_press_event_t<span style="color: #990000">*)</span>E<span style="color: #990000">;</span>
                                <span style="color: #008080">xcb_keysym_t</span> sym <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">xcb_key_symbols_get_keysym</span></span><span style="color: #990000">(</span>
                                        win<span style="color: #990000">-&gt;</span>info<span style="color: #990000">-&gt;</span>keysymbols<span style="color: #990000">,</span> key<span style="color: #990000">-&gt;</span>detail<span style="color: #990000">,</span> win<span style="color: #990000">-&gt;</span>keyflags <span style="color: #990000">);</span>
                                <span style="color: #009900">long</span> ucs <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">keysym2ucs</span></span><span style="color: #990000">((</span>KeySym<span style="color: #990000">)</span>sym<span style="color: #990000">);</span>
                                <span style="color: #008080">utf8_t</span> utf8 <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">get_utf8_from_ucs</span></span><span style="color: #990000">(</span>ucs<span style="color: #990000">);</span>
                                utf8<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
<span style="font-style: italic"><span style="color: #9A1900">/*</span></span>
<span style="font-style: italic"><span style="color: #9A1900">                                printf("found ucs code x0%04x, %s, from symbol 0x%04x\n", (uint32_t)ucs, utf8.code, sym);</span></span>
<span style="font-style: italic"><span style="color: #9A1900">                                printf("DETAIL = 0x%04x\n", key-&gt;detail); */</span></span>
                        <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> XCB_EXPOSE<span style="color: #990000">:</span><span style="color: #FF0000">{</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">geometry</span> G<span style="color: #990000">;</span>
                                <span style="color: #009900">float</span> H<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*</span> W<span style="color: #990000">;</span>
                                Display<span style="color: #990000">*</span> D<span style="color: #990000">;</span>
                                <span style="color: #008080">xcb_window_t</span> win<span style="color: #990000">;</span>
                                <span style="color: #008080">GLXContext</span> ctxt<span style="color: #990000">;</span>
                                xcb_expose_event_t<span style="color: #990000">*</span> expose <span style="color: #990000">=</span> <span style="color: #990000">(</span>xcb_expose_event_t<span style="color: #990000">*)</span>E<span style="color: #990000">;</span>
                                <span style="color: #009900">int</span> <span style="color: #990000">(*</span>draw<span style="color: #990000">)(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">window</span><span style="color: #990000">*);</span>
                                <span style="font-weight: bold"><span style="color: #000000">STDX11LOOP_SelectWindow</span></span><span style="color: #990000">(</span>expose<span style="color: #990000">-&gt;</span>window<span style="color: #990000">);</span>
                                W <span style="color: #990000">=</span> <span style="color: #990000">&amp;</span>cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">;</span>
                                D <span style="color: #990000">=</span> W<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">;</span>
                                win <span style="color: #990000">=</span> W<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">;</span>
                                ctxt <span style="color: #990000">=</span> W<span style="color: #990000">-&gt;</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>context<span style="color: #990000">;</span>
                                G <span style="color: #990000">=</span> W<span style="color: #990000">-&gt;</span>geom<span style="color: #990000">;</span>
                                draw <span style="color: #990000">=</span> cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>draw<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"drawing (%d,%d %dx%d)...</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>G<span style="color: #990000">));</span>
                                H <span style="color: #990000">=</span> W<span style="color: #990000">-&gt;</span>display<span style="color: #990000">-&gt;</span>screen<span style="color: #990000">-&gt;</span>height_in_pixels<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>G<span style="color: #990000">.</span>h<span style="color: #990000">&gt;</span>H<span style="color: #990000">)</span>G<span style="color: #990000">.</span>h<span style="color: #990000">=</span>H<span style="color: #990000">;</span>
                                G<span style="color: #990000">.</span>y <span style="color: #990000">=</span> H <span style="color: #990000">-</span> G<span style="color: #990000">.</span>h<span style="color: #990000">;</span>
                                G<span style="color: #990000">.</span>x <span style="color: #990000">=</span> <span style="color: #990000">.</span>0f<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"viewport (%d,%d %dx%d)...</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>G<span style="color: #990000">));</span>
                                <span style="font-weight: bold"><span style="color: #000000">glViewport</span></span><span style="color: #990000">(</span>G<span style="color: #990000">.</span>x<span style="color: #990000">,</span>G<span style="color: #990000">.</span>y<span style="color: #990000">,</span>G<span style="color: #990000">.</span>w<span style="color: #990000">,</span>G<span style="color: #990000">.</span>h<span style="color: #990000">);</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>draw<span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #000000">draw</span></span><span style="color: #990000">(&amp;</span>cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">);</span>
                                <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"...done.</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">);</span>
                        <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> XCB_CONFIGURE_NOTIFY<span style="color: #990000">:</span><span style="color: #FF0000">{</span>
                                Display<span style="color: #990000">*</span> D<span style="color: #990000">;</span>
                                <span style="color: #008080">GLXContext</span> ctxt<span style="color: #990000">;</span>
                                xcb_connection_t<span style="color: #990000">*</span> c<span style="color: #990000">;</span>
                                <span style="color: #008080">xcb_window_t</span> win<span style="color: #990000">;</span>
                                <span style="color: #008080">uint16_t</span> mask<span style="color: #990000">;</span>
                                <span style="color: #008080">uint32_t</span> values<span style="color: #990000">[</span><span style="color: #993399">4</span><span style="color: #990000">];</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">geometry</span> G<span style="color: #990000">,</span>O<span style="color: #990000">;</span>
                                xcb_configure_notify_event_t<span style="color: #990000">*</span> cfg <span style="color: #990000">=</span>
                                        <span style="color: #990000">(</span>xcb_configure_notify_event_t<span style="color: #990000">*)</span>E<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #000000">STDX11LOOP_SelectWindow</span></span><span style="color: #990000">(</span>cfg<span style="color: #990000">-&gt;</span>window<span style="color: #990000">);</span>
                                win <span style="color: #990000">=</span> cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">;</span>
                                c <span style="color: #990000">=</span> cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>connection<span style="color: #990000">;</span>
                                D <span style="color: #990000">=</span> cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>display<span style="color: #990000">-&gt;</span>handle<span style="color: #990000">;</span>
                                ctxt <span style="color: #990000">=</span> cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>ctxt<span style="color: #990000">.</span>gl<span style="color: #990000">-&gt;</span>context<span style="color: #990000">;</span>
                                mask <span style="color: #990000">=</span> XCB_CONFIG_WINDOW_X<span style="color: #990000">|</span>
                                        XCB_CONFIG_WINDOW_Y<span style="color: #990000">|</span>
                                        XCB_CONFIG_WINDOW_WIDTH<span style="color: #990000">|</span>
                                        XCB_CONFIG_WINDOW_HEIGHT<span style="color: #990000">;</span>
                                G<span style="color: #990000">=</span>cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>geom<span style="color: #990000">;</span> O<span style="color: #990000">.</span>x<span style="color: #990000">=(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>cfg<span style="color: #990000">-&gt;</span>x<span style="color: #990000">;</span>
                                O<span style="color: #990000">.</span>y<span style="color: #990000">=(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>cfg<span style="color: #990000">-&gt;</span>y<span style="color: #990000">;</span> O<span style="color: #990000">.</span>w<span style="color: #990000">=(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>cfg<span style="color: #990000">-&gt;</span>width<span style="color: #990000">;</span>
                                O<span style="color: #990000">.</span>h<span style="color: #990000">=(</span><span style="color: #009900">float</span><span style="color: #990000">)</span>cfg<span style="color: #990000">-&gt;</span>height<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #000000">GEOM_DELTA</span></span><span style="color: #990000">(</span>G<span style="color: #990000">,</span>O<span style="color: #990000">)&gt;.</span>25f<span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> DEBUG_WINDOW_GEOMETRY
                                        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"configured window "</span>
                                                <span style="color: #FF0000">"[(%d,%d %dx%d) - (%d,%d %dx%d)]Â² ="</span>
                                                <span style="color: #FF0000">"%f</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>G<span style="color: #990000">),</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>O<span style="color: #990000">),</span> <span style="font-weight: bold"><span style="color: #000000">GEOM_DELTA</span></span><span style="color: #990000">(</span>G<span style="color: #990000">,</span>O<span style="color: #990000">));</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
                                        G<span style="color: #990000">=</span>O<span style="color: #990000">;</span> values<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]=(</span>uint32_t<span style="color: #990000">)(</span>G<span style="color: #990000">.</span>x<span style="color: #990000">+.</span>5f<span style="color: #990000">);</span>
                                        values<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]=(</span>uint32_t<span style="color: #990000">)(</span>G<span style="color: #990000">.</span>y<span style="color: #990000">+.</span>5f<span style="color: #990000">);</span>
                                        values<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]=(</span>uint32_t<span style="color: #990000">)(</span>G<span style="color: #990000">.</span>w<span style="color: #990000">+.</span>5f<span style="color: #990000">);</span>
                                        values<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">]=(</span>uint32_t<span style="color: #990000">)(</span>G<span style="color: #990000">.</span>h<span style="color: #990000">+.</span>5f<span style="color: #990000">);</span>
                                        <span style="font-style: italic"><span style="color: #9A1900">// xcb_configure_window(c,cw-&gt;window.ctxt.gl-&gt;window,mask,values);</span></span>
                                        cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>geom <span style="color: #990000">=</span> G<span style="color: #990000">;</span>
                                        cw<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>mode<span style="color: #990000">|=</span> wm_size_changed<span style="color: #990000">;</span>
                                <span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000080">#if</span></span> DEBUG_WINDOW_GEOMETRY<span style="color: #990000">&amp;</span><span style="color: #993399">2</span>
                                <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="color: #FF0000">{</span>
                                        <span style="font-weight: bold"><span style="color: #000000">printf</span></span><span style="color: #990000">(</span><span style="color: #FF0000">"not configured window "</span>
                                                <span style="color: #FF0000">"[(%d,%d %dx%d) - (%d,%d %dx%d)]Â² ="</span>
                                                <span style="color: #FF0000">"%f</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>G<span style="color: #990000">),</span> <span style="font-weight: bold"><span style="color: #000000">GEOM</span></span><span style="color: #990000">(</span>O<span style="color: #990000">),</span> <span style="font-weight: bold"><span style="color: #000000">GEOM_DELTA</span></span><span style="color: #990000">(</span>G<span style="color: #990000">,</span>O<span style="color: #990000">));</span>
                                <span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000080">#endif</span></span>
                        <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                        <span style="font-weight: bold"><span style="color: #0000FF">case</span></span> <span style="color: #993399">0</span><span style="color: #990000">:</span> <span style="color: #FF0000">{</span>
                                xcb_generic_error_t<span style="color: #990000">*</span> err <span style="color: #990000">=</span> <span style="color: #990000">(</span>xcb_generic_error_t<span style="color: #990000">*)</span>E<span style="color: #990000">;</span>
                                <span style="font-weight: bold"><span style="color: #000000">fprintf</span></span><span style="color: #990000">(</span>stderr<span style="color: #990000">,</span> <span style="color: #FF0000">"got error code %03d</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span>
                                        <span style="color: #FF0000">"error label: %-30s</span><span style="color: #CC33CC">\n</span><span style="color: #FF0000">"</span><span style="color: #990000">,</span> err<span style="color: #990000">-&gt;</span>error_code<span style="color: #990000">,</span>
                                        <span style="font-weight: bold"><span style="color: #000000">xcb_event_get_error_label</span></span><span style="color: #990000">(</span>err<span style="color: #990000">-&gt;</span>error_code<span style="color: #990000">)</span>
                                <span style="color: #990000">);</span>
                        <span style="color: #FF0000">}</span> <span style="font-weight: bold"><span style="color: #0000FF">break</span></span><span style="color: #990000">;</span>
                <span style="color: #FF0000">}</span>
                <span style="font-weight: bold"><span style="color: #000000">free</span></span><span style="color: #990000">(</span>E<span style="color: #990000">);</span> display<span style="color: #990000">-&gt;</span>event <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
</tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_ucs_to_utf8_converter">UCS to UTF8 Converter</h3>
<div class="paragraph"><p>Convert a UCS Character to a UTF8 code.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #008080">utf8_t</span> <span style="font-weight: bold"><span style="color: #000000">get_utf8_from_ucs</span></span><span style="color: #990000">(</span><span style="color: #008080">uint32_t</span> cp<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="color: #008080">utf8_t</span> ret<span style="color: #990000">=</span><span style="color: #FF0000">{</span> <span style="color: #FF0000">{</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #990000">,</span><span style="color: #993399">0xff</span><span style="color: #FF0000">}</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0x7f</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">unsigned</span> <span style="color: #009900">char</span><span style="color: #990000">)</span>cp<span style="color: #990000">;</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0x7ff</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0xc0</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">6</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&amp;</span><span style="color: #993399">0x03f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0xffff</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0xe0</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">12</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">6</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0x1fffff</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0xf0</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">18</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">12</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">6</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">4</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0x3ffffff</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0xf8</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">24</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">18</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">12</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">6</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">4</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">5</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>cp<span style="color: #990000">&lt;=</span><span style="color: #993399">0x7fffffff</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">0</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0xfc</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">30</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">1</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">24</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">2</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">18</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">3</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">12</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">4</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|((</span>cp<span style="color: #990000">&gt;&gt;</span><span style="color: #993399">6</span><span style="color: #990000">)&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">5</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #993399">0x80</span><span style="color: #990000">|(</span>cp<span style="color: #990000">&amp;</span><span style="color: #993399">0x3f</span><span style="color: #990000">));</span>
                ret<span style="color: #990000">.</span>code<span style="color: #990000">[</span><span style="color: #993399">6</span><span style="color: #990000">]</span> <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
</tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_waiting_for_window_events_and_timeouts">Waiting for Window Events and Timeouts</h3>
<div class="paragraph"><p>Most events have input sources, which can be polled from a set of file handles.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">wait_for_event</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> d<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="color: #009900">int</span> ret <span style="color: #990000">=</span> <span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">static</span></span> <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">ev_loop</span><span style="color: #990000">*</span> L <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(!</span>L<span style="color: #990000">)</span> L<span style="color: #990000">=</span>EV_DEFAULT<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #000000">ev_run</span></span><span style="color: #990000">(</span>L<span style="color: #990000">,</span><span style="color: #993399">0</span><span style="color: #990000">);</span>
        ret <span style="color: #990000">=</span> <span style="color: #990000">(</span><span style="color: #009900">int</span><span style="color: #990000">)</span><span style="font-weight: bold"><span style="color: #000000">ev_depth</span></span><span style="color: #990000">(</span>L<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
</tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_general_list_operations">General List Operations</h3>
<div class="paragraph"><p>Some simple list operations on opaque list elements. Acutally we use an array of
lists, to be able to convert the list into a sorted array, which can be
searched by binary search.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">void</span><span style="color: #990000">*</span> <span style="font-weight: bold"><span style="color: #000000">new_list</span></span><span style="color: #990000">(</span><span style="color: #009900">unsigned</span> n<span style="color: #990000">,</span> <span style="color: #009900">unsigned</span> l<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">enum</span></span> <span style="color: #FF0000">{</span> AnyList<span style="color: #990000">=</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span><span style="color: #990000">),</span> AnyEl<span style="color: #990000">=</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span><span style="color: #990000">)</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #009900">unsigned</span> E <span style="color: #990000">=</span> l<span style="color: #990000">+</span>AnyEl<span style="color: #990000">;</span>
        <span style="color: #009900">unsigned</span> L <span style="color: #990000">=</span> n<span style="color: #990000">*</span>E <span style="color: #990000">+</span> AnyList<span style="color: #990000">;</span>
        <span style="color: #009900">void</span><span style="color: #990000">*</span> space <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">calloc</span></span><span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">,</span>L<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span><span style="color: #990000">*</span> List<span style="color: #990000">=</span>space<span style="color: #990000">,</span> ListObj<span style="color: #990000">=</span> <span style="color: #FF0000">{</span> <span style="color: #990000">((</span><span style="color: #009900">char</span><span style="color: #990000">*)</span>space<span style="color: #990000">)+</span><span style="font-weight: bold"><span style="color: #0000FF">sizeof</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span><span style="color: #990000">),</span> E<span style="color: #990000">,</span> n<span style="color: #990000">*</span>E<span style="color: #990000">,</span> <span style="color: #993399">0</span><span style="color: #990000">,</span> <span style="color: #993399">0</span> <span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #990000">*</span>List <span style="color: #990000">=</span> ListObj<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> space<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>add_element<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> ret <span style="color: #990000">=</span> <span style="color: #FF0000">{</span><span style="color: #993399">0x0</span><span style="color: #990000">,</span><span style="color: #993399">0x0</span><span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #009900">char</span><span style="color: #990000">*</span>ip<span style="color: #990000">,*</span>dp<span style="color: #990000">,*</span>ep<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span> <span style="color: #990000">*</span>_l <span style="color: #990000">=</span> list<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span> <span style="color: #990000">*</span>_e<span style="color: #990000">;</span>

        ip<span style="color: #990000">=</span>dp<span style="color: #990000">=</span><span style="color: #993399">0x0</span><span style="color: #990000">;</span> ep<span style="color: #990000">=((</span><span style="color: #009900">char</span><span style="color: #990000">*)</span>_l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">)+</span>_l<span style="color: #990000">-&gt;</span>count<span style="color: #990000">*</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span> <span style="color: #990000">((</span><span style="color: #009900">char</span><span style="color: #990000">*)</span>_l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">+</span>_l<span style="color: #990000">-&gt;</span>space<span style="color: #990000">)&lt;(</span>ep<span style="color: #990000">+</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">)</span> <span style="color: #990000">)</span>
                <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
        ret <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">search_element</span></span><span style="color: #990000">(</span>list<span style="color: #990000">,</span>element<span style="color: #990000">,</span>compar<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>ret<span style="color: #990000">.</span>el<span style="color: #990000">!=</span><span style="color: #993399">0x0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>ret<span style="color: #990000">.</span>el<span style="color: #990000">=</span><span style="color: #993399">0x0</span><span style="color: #990000">;</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span><span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>ret<span style="color: #990000">.</span>base <span style="color: #990000">==</span> <span style="color: #993399">0x0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>_l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">==</span><span style="color: #993399">0x0</span><span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span> <span style="font-style: italic"><span style="color: #9A1900">/* {0,0} =&gt; can't add to void */</span></span>
                _e <span style="color: #990000">=</span> _l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">((</span>_e<span style="color: #990000">-&gt;</span>mode <span style="color: #990000">&amp;</span> <span style="color: #990000">(</span><span style="color: #993399">1</span><span style="color: #990000">&lt;&lt;</span>lem_data_set<span style="color: #990000">))</span> <span style="color: #990000">==</span> <span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                        <span style="font-weight: bold"><span style="color: #000000">COPY_LIST_ELEMENT</span></span><span style="color: #990000">(((</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span><span style="color: #990000">*)</span>element<span style="color: #990000">),</span>_e<span style="color: #990000">,</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">);</span>
                        ret<span style="color: #990000">.</span>el<span style="color: #990000">=</span>_e<span style="color: #990000">;</span>
                        _l<span style="color: #990000">-&gt;</span>count<span style="color: #990000">++;</span>
                <span style="color: #FF0000">}</span>
                <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="color: #FF0000">{</span>
                        ip<span style="color: #990000">=</span>_l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">;</span> dp<span style="color: #990000">=</span>ip<span style="color: #990000">+</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">;</span>
                <span style="color: #FF0000">}</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="color: #FF0000">{</span>
                ip<span style="color: #990000">=</span>ret<span style="color: #990000">.</span>base<span style="color: #990000">;</span> ip<span style="color: #990000">+=</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">;</span>
                dp<span style="color: #990000">=</span>ip<span style="color: #990000">;</span> dp<span style="color: #990000">+=</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span> <span style="color: #990000">((</span><span style="color: #009900">char</span><span style="color: #990000">*)</span>_l<span style="color: #990000">-&gt;</span>head<span style="color: #990000">)+</span>_l<span style="color: #990000">-&gt;</span>space <span style="color: #990000">&lt;</span> ip <span style="color: #990000">)</span> ip <span style="color: #990000">=</span> <span style="color: #993399">0x0</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>ip<span style="color: #990000">!=</span><span style="color: #993399">0x0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                _e <span style="color: #990000">=</span> <span style="color: #990000">((</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span><span style="color: #990000">*)</span>ip<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>ep<span style="color: #990000">&gt;</span>ip<span style="color: #990000">)</span> <span style="color: #FF0000">{</span> <span style="font-weight: bold"><span style="color: #000000">memcpy</span></span><span style="color: #990000">(</span>dp<span style="color: #990000">,</span>ip<span style="color: #990000">,</span>ep<span style="color: #990000">-</span>ip<span style="color: #990000">);</span> <span style="color: #FF0000">}</span>
                <span style="font-weight: bold"><span style="color: #000000">COPY_LIST_ELEMENT</span></span><span style="color: #990000">(((</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list_element</span><span style="color: #990000">*)</span>element<span style="color: #990000">),</span>_e<span style="color: #990000">,</span>_l<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">);</span>
                _l<span style="color: #990000">-&gt;</span>count<span style="color: #990000">++;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>

<span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>search_element<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> ret <span style="color: #990000">=</span> <span style="color: #FF0000">{</span><span style="color: #993399">0x0</span><span style="color: #990000">,</span><span style="color: #993399">0x0</span><span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="color: #009900">char</span><span style="color: #990000">*</span> bp<span style="color: #990000">;</span>
        <span style="color: #009900">unsigned</span> m<span style="color: #990000">,</span>l<span style="color: #990000">,</span>r<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> c<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">any_list</span><span style="color: #990000">*</span> L<span style="color: #990000">=</span>list<span style="color: #990000">;</span>

        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>L<span style="color: #990000">-&gt;</span>count<span style="color: #990000">==</span><span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">for</span></span> <span style="color: #990000">(</span>bp<span style="color: #990000">=</span>L<span style="color: #990000">-&gt;</span>head<span style="color: #990000">,</span>l<span style="color: #990000">=</span><span style="color: #993399">0</span><span style="color: #990000">,</span>r<span style="color: #990000">=</span>L<span style="color: #990000">-&gt;</span>count<span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span> <span style="color: #993399">0</span><span style="color: #990000">&lt;((</span>r<span style="color: #990000">+</span><span style="color: #993399">1</span><span style="color: #990000">)-</span>l<span style="color: #990000">);</span> <span style="color: #990000">)</span> <span style="color: #FF0000">{</span>
                m <span style="color: #990000">=</span> <span style="color: #990000">(</span>l<span style="color: #990000">+</span>r<span style="color: #990000">)/</span><span style="color: #993399">2</span><span style="color: #990000">;</span>
                ret<span style="color: #990000">.</span>base<span style="color: #990000">=(</span>L<span style="color: #990000">-&gt;</span>head<span style="color: #990000">+</span>m<span style="color: #990000">*</span>L<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">);</span>
                c <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">compar</span></span><span style="color: #990000">(</span>element<span style="color: #990000">,</span>ret<span style="color: #990000">.</span>base<span style="color: #990000">);</span>
                <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>c<span style="color: #990000">==</span><span style="color: #993399">0</span><span style="color: #990000">)</span> <span style="color: #FF0000">{</span> ret<span style="color: #990000">.</span>el<span style="color: #990000">=</span>ret<span style="color: #990000">.</span>base<span style="color: #990000">;</span> <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span> <span style="color: #FF0000">}</span>
                <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>c<span style="color: #990000">&lt;</span><span style="color: #993399">0</span><span style="color: #990000">)</span> r<span style="color: #990000">=</span>m<span style="color: #990000">-</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
                <span style="font-weight: bold"><span style="color: #0000FF">else</span></span> l<span style="color: #990000">=</span>m<span style="color: #990000">+</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
        <span style="color: #FF0000">}</span>
        <span style="font-weight: bold"><span style="color: #0000FF">if</span></span> <span style="color: #990000">(</span>c<span style="color: #990000">&lt;</span><span style="color: #993399">0</span><span style="color: #990000">)</span> ret<span style="color: #990000">.</span>base<span style="color: #990000">=(</span>L<span style="color: #990000">-&gt;</span>head<span style="color: #990000">+</span>l<span style="color: #990000">*</span>L<span style="color: #990000">-&gt;</span>elsize<span style="color: #990000">);</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>

<span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">compare_window_elements</span></span><span style="color: #990000">(</span><span style="color: #009900">void</span><span style="color: #990000">*</span> a<span style="color: #990000">,</span> <span style="color: #009900">void</span><span style="color: #990000">*</span> b<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span><span style="color: #990000">*</span> A <span style="color: #990000">=</span> a<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span><span style="color: #990000">*</span> B <span style="color: #990000">=</span> b<span style="color: #990000">;</span>
        <span style="color: #009900">int</span> i <span style="color: #990000">=</span> A <span style="color: #990000">?</span>A<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">:</span> <span style="color: #993399">0</span><span style="color: #990000">;</span>
        <span style="color: #009900">int</span> j <span style="color: #990000">=</span> B <span style="color: #990000">?</span>B<span style="color: #990000">-&gt;</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">:</span> <span style="color: #993399">0</span><span style="color: #990000">;</span>

        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">(</span>i<span style="color: #990000">&lt;</span>j<span style="color: #990000">)</span> <span style="color: #990000">?-</span><span style="color: #993399">1</span> <span style="color: #990000">:(</span>i<span style="color: #990000">==</span>j<span style="color: #990000">)?</span> <span style="color: #993399">0</span><span style="color: #990000">:</span> <span style="color: #990000">+</span><span style="color: #993399">1</span><span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
</tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_list_modes">LIST MODES</h3>
<div class="paragraph"><p>Depending on the usage of a data space, we might store the collection as a sorted
array or as a double linked list. The transformation functions might be used
to assure that wanted mode is enabled.</p></div>
<div class="paragraph"><p>The list modes are</p></div>
<div class="ulist"><ul>
<li>
<p>
<tt>lm_list</tt> â a double linked list.
</p>
</li>
<li>
<p>
<tt>lm_array</tt> â a sorted array.
</p>
</li>
</ul></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>list_mode<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> ret <span style="color: #990000">=</span> <span style="color: #FF0000">{</span><span style="color: #993399">0x0</span><span style="color: #990000">,</span><span style="color: #993399">0x0</span><span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span>
<span style="font-weight: bold"><span style="color: #000000">LIST_FUNC</span></span><span style="color: #990000">(</span>array_mode<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> ret <span style="color: #990000">=</span> <span style="color: #FF0000">{</span><span style="color: #993399">0x0</span><span style="color: #990000">,</span><span style="color: #993399">0x0</span><span style="color: #FF0000">}</span><span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> ret<span style="color: #990000">;</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
<div class="sect2">
<h3 id="_selecting_a_window">SELECTING A WINDOW</h3>
<div class="paragraph"><p>Most applications will run only one window, but this code is a good use case
for the list handler.</p></div>
<div class="listingblock">
<div class="content"><!-- Generator: GNU source-highlight 3.1
by Lorenzo Bettini
http://www.lorenzobettini.it
http://www.gnu.org/software/src-highlite -->
<pre><tt><span style="color: #009900">int</span> <span style="font-weight: bold"><span style="color: #000000">select_window</span></span><span style="color: #990000">(</span><span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">display</span><span style="color: #990000">*</span> d<span style="color: #990000">,</span> <span style="color: #009900">int</span> win<span style="color: #990000">)</span>
<span style="color: #FF0000">{</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_of_windows_el</span> W<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">struct</span></span> <span style="color: #008080">list_return</span> res<span style="color: #990000">;</span>
        W<span style="color: #990000">.</span>window<span style="color: #990000">.</span>handle<span style="color: #990000">=(</span>xcb_window_t<span style="color: #990000">)</span>win<span style="color: #990000">;</span>
        res <span style="color: #990000">=</span> <span style="font-weight: bold"><span style="color: #000000">search_element</span></span><span style="color: #990000">(</span>d<span style="color: #990000">-&gt;</span>all_windows<span style="color: #990000">,</span> <span style="color: #990000">&amp;</span>W<span style="color: #990000">,</span>compare_window_elements<span style="color: #990000">);</span>
        d<span style="color: #990000">-&gt;</span>current_window <span style="color: #990000">=</span> res<span style="color: #990000">.</span>el<span style="color: #990000">;</span>
        <span style="font-weight: bold"><span style="color: #0000FF">return</span></span> <span style="color: #990000">(</span>res<span style="color: #990000">.</span>el <span style="color: #990000">?</span><span style="color: #993399">0</span> <span style="color: #990000">:</span><span style="color: #993399">1</span><span style="color: #990000">);</span>
<span style="color: #FF0000">}</span></tt></pre></div></div>
</div>
</div>
</div>
</div>
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Version 0.1<br />
Last updated 2012-01-03 16:31:53 CET
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