Attachment 4035 Details for Bug 5273 – The program

The program

damage-bug-2.c (text/plain), 2.28 KB, created by Søren Sandmann Pedersen on 2005-12-08 07:31:37 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Søren Sandmann Pedersen

Created: 2005-12-08 07:31:37 UTC

Size: 2.28 KB

patch

obsolete

>#include <X11/Xlib.h>
>#include <X11/extensions/Xcomposite.h>
>#include <stdlib.h>
>#include <stdio.h>
>
>static int comp_event;
>static int comp_error;
>
>/* This program shows that calling XCompositeUnredirect() on a window
> * will cause underlying _redirected_ windows to be exposed.
> */
>static void
>disaster (const char *what)
>{
>    fprintf (stderr, "Error: %s\n", what);
>    exit (0);
>}
>
>static char *
>get_event_name (int type)
>{
>    if (type == Expose)
>	return "Expose";
>    else
>	return "Unknown event type";
>}
>
>static void
>dump_events (Display *dpy, const char *header)
>{
>    XSync (dpy, False);
>    
>    if (header)
>	printf ("%s", header);
>    
>    while (XPending (dpy))
>    {
>	XEvent event;
>	
>	XNextEvent (dpy, &event);
>
>	if (header)
>	{
>	    printf ("  event: %s  (%lx)\n",
>		    get_event_name (event.type), event.xany.window);
>	}
>    }
>}
>    
>int
>main (int argc, char **argv)
>{
>    Display *dpy;
>    Window main_window;
>    Window redirected_window;
>    Window non_redirected_window;
>
>    dpy = XOpenDisplay (NULL);
>    if (!XCompositeQueryExtension (dpy, &comp_event, &comp_error))
>	disaster ("No composite extension found\n");
>
>    /* Create main window */
>    
>    main_window = XCreateSimpleWindow (dpy, XDefaultRootWindow (dpy),
>				       100, 100, 600, 400, 0, 0, 0xffffffff);
>    XMapWindow (dpy, main_window);
>
>    XCompositeRedirectSubwindows (dpy,
>				  main_window,
>				  CompositeRedirectManual);
>    
>    /* Create redirected subwindow */
>
>    redirected_window = XCreateSimpleWindow (dpy, main_window,
>					     50, 50, 500, 300,
>					     0, 0, 0x000000ff);
>    printf ("redirected window is %lx\n", redirected_window); 
>    XSelectInput (dpy, redirected_window, ExposureMask);
>    XMapWindow (dpy, redirected_window);
>
>    /* discard all events resulting from the map */
>    dump_events (dpy, NULL);
>
>    /* Create unredirected subwindow, completely covering
>     * the redirected one
>     */
>    non_redirected_window = XCreateSimpleWindow (dpy, main_window,
>						 25, 25, 550, 350,
>						 0, 0, 0xaaaaaaaa);
>    XMapWindow (dpy, non_redirected_window);
>
>    /* discard all events resulting from the map */
>    dump_events (dpy, NULL);
>
>    XCompositeUnredirectWindow (dpy, non_redirected_window,
>				CompositeRedirectManual);
>
>    dump_events (dpy, "events caused by unredirecting\n");
>
>    sleep (100);
>}

Actions: View

Attachments on bug 5273: 4035

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.