How to use wxListCtrl (especially when using XML resources)?

I'm sorry for such a stupid question, but I cant find clear way to use
wxListCtrl.
I can't found what I have to pass to the InsertItem function and how can I
get a pointer
to wxListCtrl which is in frame created from .xrc file?

Maybe I'm just a stupid lamer, but I think that wxPython suffers from the
lack of documentation. Is it really so?
Thanks!