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Use a Tk::Spinbox, see https://metacpan.org/source/SREZIC/Tk-804.033/examples/spinbox See Re: can'yt figure out whats wrong in this code?, Re: Perl/Tk,How to limit the number of characters in Entry? and widget - Demonstration of Perl/Tk widgets, Entries and Spin-boxes: 3. Validated entries and password fields.
In reply to Re: Tk Entry validation conundrum (numentry/spinbox)
by Anonymous Monk
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