[issue33665] tkinter.ttk.Scrollbar.fraction() under-estimates length

[E. Paine]

E. Paine <paineelisha at gmail.com> added the comment:

I agree that the `tkinter.ttk.Scrollbar.fraction` under-estimates the length of the trough and I have written a program to try to measure this precisely.

When tested (only on Linux, granted), this deficit was measured to be 9 pixels (unless I got the maths wrong!). Tcl/Tk gave **exactly** the same numbers when run using 'wish'.

Thank you pez for reporting this, but 2 years on it should be closed as third party (please do take it up with the tcl team if you feel it is a real issue).

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nosy: +epaine
title: tkinter.ttk.Scrollbar.fraction() is inaccurate, or at least inconsistent compared to the non ttk version -> tkinter.ttk.Scrollbar.fraction() under-estimates length
versions: +Python 3.10, Python 3.9 -Python 3.6, Python 3.7
Added file: https://bugs.python.org/file49292/ttkscrl.py

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<https://bugs.python.org/issue33665>
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