Perhaps there is some clean-up in the roll handler you're not doing.

David LeBlanc
Seattle, WA USA

>  -----Original Message-----
>  From: python-list-admin@[...].org
>  [mailto:python-list-admin@[...].org]On Behalf Of Edward K. Ream
>  Sent: Thursday, August 15, 2002 12:14
>  To: python-list@[...].org
>  Subject: Re: Tk mouse wheel events?
> 
> 
>  > 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.
> 
>  Edward
> 
> 
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