Hello all. On the Facebook group someone was asking for a way to access the mouse wheel in Pd. I realized that a GUI plugin could do it, and so I put one together. Here it is, in case anyone finds it useful:
https://github.com/jwmatthys/pd-mousewheel-plugin
It sends the MouseWheel delta (+1 or -1) to [r mousewheel]. There is a simple counter abstraction for [mousewheel] that outputs a running value.
It works on Linux and OSX; I think it will work on Windows but I can't test it at the moment.
Presumably this overrides the default mouse wheel behavior.
Joel