hi,

I have a perl script that converts databases and I'd like it to inform the user of its progress. The code below is supposed to increment the progress bar and set it to zero when the "Clear" button is pressed. Unfortunately, it does none of these. What am I doing wrong?

use strict;
use Threads;
use Tk;
use Thread::Queue;
use Tk::ProgressBar;

my $comm = new Thread::Queue;
my ($mw, $percent_done)=create_gui();
threads->new(\&go, $comm, $percent_done)->detach;
$mw->repeat( 100, [\&updateScreen, $comm, $percent_done] );
MainLoop();

sub create_gui {
    my $percent_done=0;
    my $mw = MainWindow->new( -title => 'Test');
    $mw->Label( -text => "percent_done" )->pack;
    $mw->ProgressBar(-variable => \$percent_done)->pack;
    $mw->Button ( 
        -text => "Clear",
        -command => sub {$percent_done=0}
        )->pack;

    return ($mw, $percent_done);
    }
    
sub go {
    my ($comm, $percent_done)=@_;
    
    while(1) {
        $comm->enqueue( $percent_done+5);
        select undef, undef, undef, 0.1;
        }
    }

sub updateScreen {
    my ($comm, $percent_done)=@_;
    ($percent_done = $comm->dequeue ) if $comm->pending;       
    }

[download]

In reply to Tk::ProgressBar and threads by dannoura

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