If you've ever had a reason to try to track the mousewheel, and couldn't seem to get it to fire while using a Window or a Control, that's because neither of these elements are set up to use the mousewheel.
Instead, use something that does, like a ListBox control - size it/color it just like you would for a control, and it will do the job nicely.
Yes, that's right - the event ListBox inherits from the Control class, doesn't actually work
for the Control class.