I would like to build a momentary button that activates when pressed
and stops when released. Sound simple? However, I can't seem to find
any way to catch the mouse down event within the button. I've tried
subclassing the button and using the OnChildNotify and this got me
some events but not the button down ones. Does anybody have an example
on doing this? I've been all through the MSDN CD-ROM without luck.