[wxPython] EVT_ACTIVATE Help!

EVT_ACTIVATE triggers when the application or a child window activates. How
can I tell the difference in the function I use to handle the event.

example:

EVT_ACTIVATE(self, self.DoSomething)

    def DoSomething(self,event):

          #Did the Child window activate or the Application

I noticed there is also a EVT_ACTIVATE_APP(func) defined in the
documentation but I'm not sure how it would operate any differently...

   -Mikhael