I doubt this part works:

if (!Exists($show_table_frame))

as the syntax is exists. You might want to use defined rather. Also, try not using our but rather define the variable outside the subroutine.

Finally, all this is overkill, where you can simply use the following:

if ($frame->ismapped) {
    $frame->packForget();
}
else {
    $frame->pack(@{$frame->{PackInfo}});
}

[download]

Stop saying 'script'. Stop saying 'line-noise'.
We have nothing to lose but our metaphors.

In reply to Re: Perl/Tk:swapping of frames without loosing the data by Erez
in thread Perl/Tk:swapping of frames without loosing the data by Anonymous Monk

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