[pygtk] How to subclass gobject.GObject

[Laszlo Nagy]

  Hi All,

I'm working on a special "non visual" component that allows moving 
widgets between container with drag-and-drop. It is almost ready. I only 
need to add events like "widget_moving" and "widget_moved" etc. 
Currently, my non-visual component is based on object. I think I need to 
subclass it from gobject.Object before I can setup __gsignals__ and call 
self.emit("widget_moved"....). I read a tutorial about this:

http://www.pygtk.org/articles/cairo-pygtk-widgets/cairo-pygtk-widgets2.htm

I tried to do the same but I'm getting this nasty error:

Traceback (most recent call last):
  File "demo01.py", line 22, in <module>
    import mess.gtk.pivotview
  File "/home/gandalf/Python/Lib/mess/gtk/pivotview.py", line 12, in 
<module>
    from mess.gtk.widgetsticker import WidgetSticker
  File "/home/gandalf/Python/Lib/mess/gtk/widgetsticker.py", line 4, in 
<module>
    class WidgetSticker(gtk.Object):
  File "/var/lib/python-support/python2.5/gtk-2.0/gobject/__init__.py", 
line 41, in __init__
    cls._type_register(cls.__dict__)
  File "/var/lib/python-support/python2.5/gtk-2.0/gobject/__init__.py", 
line 95, in _type_register
    type_register(cls, namespace.get('__gtype_name__'))
TypeError: Error when calling the metaclass bases
    could not get typecode from object

Finally the question: how can I add gtk compatible signal support to my 
class? What should be the parent class? If you could point me to a good 
URL it would be fine.

Thank you


   Laszlo