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examples/cogl-x11-tfp.c: Wait for the window to be mapped

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Wait for the main window (and hence the window we create within
the main window to redirect) to be mapped and become viewable
before we try to call XCompositeNameWindowPixmap() -
XComposeNameWindowPixmap() produces a BadMatch error on a
non-viewable window.

Reviewed-by: Robert Bragg <robert.bragg@intel.com>
This commit is contained in:
Owen W. Taylor 2014-04-27 00:07:53 -04:00
parent d9afc6dada
commit a4bc66325e
1 changed files with 10 additions and 1 deletions
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11
examples/cogl-x11-tfp.c
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@ -147,7 +147,8 @@ main (int argc, char **argv)
DefaultRootWindow (xdpy),
xvisinfo->visual,
AllocNone);
mask = CWBorderPixel | CWColormap;
xattr.event_mask = StructureNotifyMask;
mask = CWBorderPixel | CWColormap | CWEventMask;
xwin = XCreateWindow (xdpy,
DefaultRootWindow (xdpy),
@ -179,6 +180,14 @@ main (int argc, char **argv)
gc = XCreateGC (xdpy, tfp_xwin, 0, NULL);
while (TRUE)
{
XWindowEvent (xdpy, xwin, StructureNotifyMask, &xev);
if (xev.xany.type == MapNotify)
break;
}
pixmap = XCompositeNameWindowPixmap (xdpy, tfp_xwin);
tfp = cogl_texture_pixmap_x11_new (ctx, pixmap, TRUE, &error);