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x11/dnd: Ignore XErrors from the COW

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The DnD code for X11 adds the composite overlay window (aka COW) to the
cache.

Yet the X11 requests to get and release the COW may trigger XErrors that
we ought to ignore otherwise the client will abort.

Fixes: #3715
This commit is contained in:
Olivier Fourdan 2021-03-22 15:19:33 +01:00
parent 0f5ae95460
commit 39db784704
1 changed files with 2 additions and 0 deletions
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2
gdk/x11/gdkdnd-x11.c
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@ -634,12 +634,14 @@ gdk_window_cache_new (GdkScreen *screen)
*/
if (gdk_screen_is_composited (screen))
{
gdk_x11_display_error_trap_push (GDK_X11_SCREEN (screen)->display);
cow = XCompositeGetOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
gdk_window_cache_add (result, cow, 0, 0,
gdk_x11_screen_get_width (screen) * GDK_X11_SCREEN(screen)->window_scale,
gdk_x11_screen_get_height (screen) * GDK_X11_SCREEN(screen)->window_scale,
TRUE);
XCompositeReleaseOverlayWindow (xdisplay, GDK_WINDOW_XID (root_window));
gdk_x11_display_error_trap_pop_ignored (GDK_X11_SCREEN (screen)->display);
}
#endif