Whenever you want something done automatically on a schedule, use a timer 
sub count {      
  print "$upper_no\n";  
               
   my $timer; # declare first so you  
             # can cancel it in it's own callback  
   $timer = $mw->repeat(1000,sub{  
        $no++;
        if ($no >= $upper_no){ $timer->cancel }  
           
      });    
     
}

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In reply to Re: displaying program status in perl tk by zentara
in thread displaying program status in perl tk by jagdish.eashwar

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