I had reported this issue on bugzilla, the id is 115432. When I close some kinds of window, gtk will go into a dead loop and report the following error again and again: (gtk-demo:30093): Gdk-CRITICAL **: file gdkwindow.c: line 526 (gdk_window_get_parent): assertion `GDK_IS_WINDOW (window)' failed You may try to run gtk-demo, open Text Widget, then close the Text Widget window, this error will be occurred. This problem is appeared in gtk+2.2.2.
