View All Attachments for Bug 42131

Attachment #52651
Test program demonstrating the problem	text/x-csrc	2011-10-23 10:40:52 UTC	4.51 KB	no flags	Details

Attachment #55087
Demonstration how it may work	text/html	2012-01-03 08:03:49 UTC	201.10 KB	no flags	Details

<!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">
<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>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Version 0.1<br />
Last updated 2012-01-03 16:31:53 CET
</div>
</div>
</body>
</html>

Attachment #55088
Complete with Makefile	application/octet-stream	2012-01-03 08:07:48 UTC	100.00 KB	no flags	Details

Attachment cannot be viewed because its MIME type is not text/*, image/*, or application/vnd.mozilla.*. Download the attachment instead.

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.