From 293bf24e6c194fa83ceefb148a2e5dec392635db Mon Sep 17 00:00:00 2001
From: Sascha Silbe <sascha-pgp@silbe.org>
Date: Sun, 04 Jul 2010 20:26:05 +0000
Subject: implement it

---
diff --git a/src/sugar/graphics/window.py b/src/sugar/graphics/window.py
index e3bef6b..8f368a8 100644
--- a/src/sugar/graphics/window.py
+++ b/src/sugar/graphics/window.py
@@ -191,8 +191,9 @@ class Window(gtk.Window):
         if self._toolbar_box:
             self.__vbox.remove(self._toolbar_box)
 
-        self.__vbox.pack_start(toolbar_box, False)
-        self.__vbox.reorder_child(toolbar_box, 0)
+        if toolbar_box:
+            self.__vbox.pack_start(toolbar_box, False)
+            self.__vbox.reorder_child(toolbar_box, 0)
 
         self._toolbar_box = toolbar_box
 
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