Minor work on the gtk example.

docs/examples/lib/gui-gtk.py

@@ -1,35 +1,43 b''
 #!/usr/bin/env python
 """Simple GTK example to manually test event loop integration.
 
 This is meant to run tests manually in ipython as:
 
 In [5]: %gui gtk
 
 In [6]: %run gui-gtk.py
 """
 
 
 import pygtk
 pygtk.require('2.0')
 import gtk
 
 
 def hello_world(wigdet, data=None):
     print "Hello World"
 
+def delete_event(widget, event, data=None):
+    return False
+
+def destroy(widget, data=None):
+    gtk.main_quit()
+
 window = gtk.Window(gtk.WINDOW_TOPLEVEL)
+self.window.connect("delete_event", delete_event)
+self.window.connect("destroy", destroy)
 button = gtk.Button("Hello World")
 button.connect("clicked", hello_world, None)
 
-window.add(self.button)
+window.add(button)
 button.show()
 window.show()
 
 try:
     from IPython.lib.inputhook import appstart_gtk
     appstart_gtk()
 except ImportError:
     gtk.main()