Flush outstanding stuff when clearing directly on a window

Clearing will directly modify the contents of the window, so we need
to flush any outstanding moves or double-buffering.

diff --git a/gdk/gdkwindow.c b/gdk/gdkwindow.c
index 7ebea1246ab5031ffbe6b6e6fef6821e5df93625..edb9581b5157ae80338c4b4a00572e70194a96b6 100644 (file)
--- a/gdk/gdkwindow.c
+++ b/gdk/gdkwindow.c
@@ -4429,6 +4429,10 @@ gdk_window_clear_region_internal (GdkWindow *window,
          gdk_region_intersect (copy,
                                private->clip_region_with_children);
 
+
+         /* Drawing directly to the window, flush anything outstanding to
+            guarantee ordering. */
+         gdk_window_flush (window);
          impl_iface->clear_region (window, copy, send_expose);
 
          gdk_region_destroy (copy);