[wxPython] Triggering events

Hi

I've run into a problem that I can't solve.
I've subclassed wxComboBox to create a version where I override SetSelection to accept a string instead of an index.
That part works fine. What I also want to do is to trigger a wxEVT_COMMAND_COMBOBOX_SELECTED event, something that the original SetSelection doesn't. I just can't figure out how to do it.
I know how to trigger a user-defined event, the demo shows it perfectly but how do I trigger a native event?

/LasseLu