I think you are looking for the -textvariable option, and give it a reference to a scalar: 

#!/usr/bin/perl -w
use strict;
use Tk;
my $foo = 500;
my $mw = MainWindow->new;
my $tes = $mw->Label(-textvariable => \$foo);
$tes->pack;
$mw->repeat(3000,sub{$foo++});
MainLoop();
__END__

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In reply to Re: Real simple Tk label by danger
in thread Real simple Tk label by kb2yht

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