[pygtk] TypeError when trying to destroy a window

[Bruno Dusausoy]

Hi,

I have some lines that cause this error message:

TypeError: descriptor 'destroy' requires a 'gtk.Widget' object but
received a 'NoneType'

The lines incriminated are:

...
self.cancel_button = self.wtree.get_widget ("package_add_cancel_button")
self.cancel_button.connect_object
	("clicked", 
	gtk.Widget.destroy, 	self.window)										gtk.Widget.destroy,

All i want is to destroy (close) "self.window"

Can somebody tell me what i'm doing wrong ? 
-- 
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