Gary Richardson wrote: > Has this bug been fixed in 2.3.5 or 2.4? Does it exist in XP systems? > > #------------------------- > from Tkinter import * > def _onMouseWheel(event): > print event > root = Tk() > root.bind('<MouseWheel>',_onMouseWheel) > root.mainloop() > > > Works for me... WinXP SP2 Python 2.4 final Adonis