Finding which control has focus

[Larry Bates]

I have a frame that contains 6 controls: ComboBox, ExpandoTextCtrl, and 2 list 
controls, cancel button, send button.  I want to know if there is some way to
trap the fact that a user clicked the mouse on the ComboBox, ExpandoTextCtrl or
either of the 2 list controls.  I would like to make the label bold to show 
which control has the focus.  onSetFocus/onKillFocus doesn't fire when you click 
on these controls.  I can't even get it to fire when I do 
MyExpandoTextCtrl.SetFocus() (but the focus does change) Is there some other 
way?  I don't have these on separate windows or panels.

Thanks in advance.
Larry Bates