I borrowed this script from Term::ReadLine::Tk. You'll need to use tkwait():
sub Tk_loop { 
    Tk->tkwait('variable',\$giveup); 
    $count_DoOne++, Tk::DoOneEvent(0) until $giveup; 
    $count_loop++; 
    $giveup = 0; 
}

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In reply to Re: Perl/Tk question about starting programs via a button by Khen1950fx
in thread Perl/Tk question about starting programs via a button by bgkirkla

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