59. My application sometimes hangs when I hit an accelerator key. Why?
This can happen if you have an accelerator
defined for a radio button, and then make that radio button invisible. Pressing
the accelerator for the invisible radio button hangs the app. The same
problem does not afflict checkboxes or normal buttons - it's just a peculiarity
of radio buttons.
There's no "fix" as such (it's a bug in
Windows itself). The solution is to routinely disable any control which you make
invisible, and we've been doing this for *years* because Windows doesn't seem to
have any philosophical problem with gleefully handing the focus to invisible
windows (d'oh).
