How to properly use XGrabKey to get a program hotkey

[cheshirekow]

> This will only work if the window manager or the window with focus 
> doesn't
> already grab the same keys. Does the example work without a window 
> manager
> running?
>
Thanks for the reply, but I believe libX will generate an error if the 
keys are already grabbed. In this case there is no error generated.

Anyway, I discovered the problem. I was using the ControlMask modifier, 
and the numlock was down on my keyboard. Evidently numlock counts as a 
modifier. *doh*. The example works fine now.