Tk progress bar

JSchmitz has asked for the wisdom of the Perl Monks concerning the following question:

I am trying to get TK::Progress bar going for a project I am working on. This code runs fine under Win32 but hoses with no errors under Linux which is where I need this to run. When executed it waits a few secs then just returns the command prompt.

#!/usr/bin/perl

use Tk;
use Tk::ProgressBar;

my $mw = MainWindow->new(-title => 'Processing');

$Progress = $mw->ProgressBar(
        -width => 30,
        -from => 0,
        -to => 100,
        -blocks => 50,
        -colors => [0, 'green', 50, 'yellow' ,80, 'red'],
        -variable => \$percent_done
   )->pack(-fill => 'x');

 $mw->Button(-text => 'Go!', -command=> sub {
    for ($i =0; $i < 1000; $i++) {
     $percent_done = $i/10;
     print "$i\n";
     $mw->update; 
   }
})->pack(-side => 'bottom');

Mainloop;
[download]

I intially thought that maybe the mod was not installed correctly but I checked and it was fine. I am pretty sure it is in the Tk standard library. Anyways it shows as being up to date:

CPAN Terminal>m Tk::ProgressBar
0001 Tk::ProgressBar 1.04 ACH
CPAN Terminal>install 0001
Installing: Tk::ProgressBar
Module Tk::ProgressBar already up to date; won't install
without force!
All cached data has been flushed.

any help would be appreciated!

cheers!

Jeff

Comment on Tk progress bar Download Code

Replies are listed 'Best First'.
Re: Tk progress bar by alien_life_form (Pilgrim) on May 12, 2002 at 18:11 UTC
Greetings, The following version: #!/usr/bin/perl use strict; use warnings; use Tk; use Tk::ProgressBar; my $percent_done=0; my $mw = MainWindow->new(-title => 'Processing'); my $Progress = $mw->ProgressBar( -width => 30, -from => 0, -to => 100, -blocks => 50, -colors => [ 0, 'green', 50, 'yellow' , 80, 'red', ], -variable => \$percent_done )->pack(-fill => 'x'); $mw->Button(-text => 'Go!', -command=> sub { my $i; for ($i =0; $i < 1000; $i++) { $percent_done = $i/10; print STDOUT "$i\n"; $mw->update; } })->pack(-side => 'bottom'); MainLoop(); [download] Works like a beaut on my machine. The most dramatic change is : Mainloop gets changed in MainLoop(). The way I made it to work, though, was by using "strict" and "warnings" ... Cheers, alf You can't have everything: where would you put it?	[reply] [d/l]
Re: Tk progress bar by hagus (Monk) on May 12, 2002 at 23:22 UTC
You may wish to check out the progress bar I uploaded as a node ... this does work on Linux. Might give you some ideas. progresWidget class -- Ash OS durbatulk, ash OS gimbatul, Ash OS thrakatulk, agh burzum-ishi krimpatul! Uzg-Microsoft-ishi amal fauthut burguuli.	[reply]
Warnings, strict by The Alien (Sexton) on May 12, 2002 at 18:12 UTC
Others are probably writing this just as I am, but you should probably check the output with at least -w and probably use strict; ... I haven't used that module before, but I'd guess if it isn't working you should at least get a warning out of it.	[reply]