I'm happy to report that FreeGLUT solved my problem. I obtained the Windows prepackaged binary distribution, pulled out freeglut.dll, renamed it to glut32.dll, and replaced the existing glut32.dll in the PyOpenGL installation directory tree with the new version. Mousewheel events are now reported, and everything else seems to be working as expected. Thanks for your help!
-- Craig Berry - http://www.cine.net/~cberry/ "Lots of things in the universe don’t solve any problems, and nevertheless exist." -- Sean Carroll -- http://mail.python.org/mailman/listinfo/python-list
