On Thu, 15 Aug 2002 19:14:05 GMT, "Edward K. Ream" <edream@[...].net>  wrote:

> > from Tkinter import *
> >
> > def roll(event):
> >     print event.delta
> >
> > frame = Frame(width=200, height=200)
> > frame.pack()
> > frame.focus_set() # wheel events goes to focussed window
> > frame.bind("<MouseWheel>", roll)
> 
> Thanks for this code.  Alas, on my XP machine, the roll handler is called,
> and after a few calls tcl83.dll crashes.  I don't think I've ever seen a
> hard tcl crash like this before.
> 
> I didn't explicitly call focus_set(), and I suppose that shouldn't matter:
> the roll handler is only called when the canvas has focus.  The Text widgets
> work properly as they always have.

On my system (windows 98se) tcl83.dll also crashes after a frew scroll clicks.
Do text widgets scroll 'automatically', I mean without explicitly binding
<MouseWheel> ? If so, I think the source of the problem could be that there's
some conflict between automatic and explicit binding of mousewheel events.
Just speculation of course.

Anton.
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