You (probably but not necessarily) need to have some way to keep track your widgets as they are created so you can refer back to them, and, you need to wrap your callbacks in a closure.

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

my %widgets;

my $mw = MainWindow->new();

my @type_of_processing = ( "type1", "type2", "type1", "type1", "type2"
+ );

for my $step_no ( 1 .. 5 ) {
    settings( $step_no, $type_of_processing[ $step_no - 1 ] );
}

MainLoop;

sub settings {
    my ( $step, $type ) = @_;
    $widgets{label}{$step} =
      $mw->Label( -text => "This is processing step no. $step. ($type)
+" )->pack;
    $widgets{entry}{$step} =
      $mw->Entry( -width => 20, -state => 'disabled' )->pack;
    $widgets{checkbutton}{$step} = $mw->Checkbutton(
        -text     => "export results to: ",
        -variable => \$widgets{status}{$step},
        -command  => [
            sub {
                if ( $widgets{status}{$step} == 1 ) {
                    $widgets{entry}{$step}->configure( -state => 'norm
+al' );
                }
                else {
                    $widgets{entry}{$step}->configure( -state => 'disa
+bled' );
                }
            },
            $_[0]
        ]
    )->pack( -before => $widgets{entry}{$step} );
}

[download]

In reply to Re: Perl::Tk Problems with creating widgets using a loop by thundergnat
in thread Perl::Tk Problems with creating widgets using a loop by Microcebus

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.