Another way: 
#!/usr/bin/perl 
use warnings;
use strict;

use Tk;

my $mw = new MainWindow;
my $time = time();
my $label = $mw->Label(-textvariable => \$time);
   $label->grid(-row => 1, -column => 1);

$mw->repeat(1000, sub{ $time = time(); } );

MainLoop;

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In reply to Re: Tk and textvariable update by ~~David~~
in thread Tk and textvariable update by rkrasowski

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