I haven't used it myself, but you might investigate the Tk  place geometry manager, in particular its  -in -x -y -relx -rely -anchor options. The caveat is that you may need to use  place as the geo. manager for the entire application to avoid the possibility of duelling managers.

In reply to Re: Perl/Tk widget coordinates, simple question by AnomalousMonk
in thread Perl/Tk widget coordinates, simple question by warpod

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