[gtk+/toplevel-embedding: 2/3] Unset toplevel flag when setting a parent window on a widget.

[Tristan Van Berkom <tvb src gnome org>]

commit 027552afe060b5eda9d250685b9f23e839cf44d6
Author: Tristan Van Berkom <tristan van berkom gmail com>
Date:   Wed Dec 22 21:23:23 2010 +0900

    Unset toplevel flag when setting a parent window on a widget.
    
    This allows toplevels to be embedded.

 gtk/gtkwidget.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 66838bc..740562e 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -9074,6 +9074,12 @@ gtk_widget_set_parent_window   (GtkWidget           *widget,
 	g_object_unref (old_parent_window);
       if (parent_window)
 	g_object_ref (parent_window);
+
+      /* Unset toplevel flag when adding a parent window to a widget,
+       * this is the primary entry point to allow toplevels to be
+       * embeddable.
+       */
+      _gtk_widget_set_is_toplevel (widget, FALSE);
     }
 }