Re: PerlTk, how to handle/setup an "autorun" block with the GUI?

[zentara]

Here is a simple usage of a timer. Tk::after and Tk::repeat both do the same thing, but Tk::after runs just once, where Tk::repeat continues until you stop it.

#!/usr/bin/perl
use Tk;
use warnings;
use strict;

my $mw = MainWindow->new(title => "Timer");
my $elapsed_sec = 0;
my $elapsed_sec_label = $mw->Label(-textvariable => \$elapsed_sec)->pa
+ck();

my $repeater; # declare first so it can be accessed in the callback
    
$mw->Button(-text => "reset", 
     -command => sub {
               $elapsed_sec = 0;
               &repeater();
             })->pack();

$mw->Button(-text => "exit", 
     -command => sub { exit })->pack();

# start first run
&repeater();
               
MainLoop;


sub repeater{

#this is repeated every second, and you can put your is_playing here
$repeater = $mw->repeat(1000 => sub {

               $elapsed_sec ++;
               
               if ($elapsed_sec > 4){ $repeater->cancel }
               
               }  ); 
      
}

[exilepanda]

Thank you very much! Your code demonstrated an alternative style from what the perldoc mentioned! Works perfectly and much easier for me to deploy!