[wxPython] MVCTree and events

G'day all,

I am using MVCTree for a little app and am having problems with the
following events

EVT_MVCTREE_ITEM_EXPANDING
EVT_MVCTREE_ITEM_COLLAPSING

Each node is a member of a class and I am trying to call a method in one of
these classes
but I cannot seem to get any correlation between the event and which node
was clicked on.

event.node and event.nodes return "None", does anyone know what I am
missing?

----Gareth Walters