SashWindow event-binding problem

The attached file is the wxPython 2.8.4 sash window demo, modified to demonstrate an event-binding problem:

Despite binding both wx.EVT_LEFT_DOWN and wx.EVT_KEY_DOWN to self.OnUserAction, self.OnUserAction is not called when the left mouse button is pressed or when a key is pressed.

What am I missing here?

Bob

SashWinBinds.py (3.37 KB)