[gtk+] GtkWindow: fix notify of :attached-to

[Sébastien Wilmet <swilmet src gnome org>]

commit 14c9023a05bc0869eae387d0e5812f8b086906f5
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Wed Apr 3 19:08:16 2013 +0200

    GtkWindow: fix notify of :attached-to
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697200

 gtk/gtkwindow.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index eaf0b57..6628ddd 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -2777,6 +2777,8 @@ gtk_window_set_attached_to (GtkWindow *window,
     gtk_style_context_set_parent (context, gtk_widget_get_style_context (priv->attach_widget));
   else
     gtk_style_context_set_parent (context, NULL);
+
+  g_object_notify (G_OBJECT (window), "attached-to");
 }
 
 /**