Stupid callback question

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Hello all,

This is probably a stupid question, but right now I'm grasping for straws.
I'm writing a wrapper for GLUT and I think I'm having trouble with the
event handler. GLUT uses a similar approach that win32lib does for event
handling, first you setup the callbacks, and then you run the main loop.
The question is, if I'm not using all of the events, will I have to set the
ones I'm not using to NULL. I know that is not the case for win32lib, but
I'm calling these C routines directly.

Thanks
Paul Martin

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