Scaling Tk scrollbar handles
fredrik at pythonware.com
Sun Sep 21 09:22:40 CEST 2003
Gordon Airport wrote:
> None of the online references that I'm using or can find tell you if
> this can be done. It's standard practice in GUI's to have the handle of
> a scrollbar sized to be the proportion of total ammount of viewable data
> to the ammount you can see in the current view region. (I think that
> explains it, you know what I mean.) I have a scrollbar attached to a
> canvas, and it scrolls properly, but it always has a tiny little handle.
by default, the canvas tells the scrollbars that the canvas surface is
unbounded (-maxfloat to +maxfloat); no matter how you scroll around,
you're only seeing a very small portion of the available coordinate
to get the behaviour you're after, set the "scrollregion" option.
for some more background and code samples, see:
More information about the Python-list