Would you believe that I wanted to give the OP some experience sorting thru lousy long variable names? :-)

To be honest, it was early, and I just pasted the first example I came across, but now that I look closer, it does have alot of fluff in it. :-)

But in my defense, I had a simple non-complicated example like yours, BUT, the OP claimed unfamiliarity with pTk, so I wanted an example that was very elementary, showing each step in excruciating newbie detail....... the adding to the listboxes, and how to get both selections with a button(or command). Also, your for() syntax is clever, but not standard, and I would hate to have a new user thinking that was a good template for setting up listboxes.

Here is how I would do a rewrite

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

my $mw = MainWindow->new();

my $f = $mw->Frame( -border => 1 )->pack( -side => "left", -fill => "b
+oth" );

#just manipulate arrays to change lists
my @list1 = ( 'a' .. 'z' );
my @list2 = ( 1 .. 100 );

my $list1 = $f->Scrolled(
   "Listbox",
   -listvariable    => \@list1,
   -scrollbars      => "osoe",
   -exportselection => 0,
   -selectmode      => "extended"
)->pack( -fill => 'both' );

my $list2 = $f->Scrolled(
   "Listbox",
   -listvariable    => \@list2,
   -scrollbars      => "osoe",
   -exportselection => 0,
   -selectmode      => "extended"
)->pack( -fill => 'both' );

$mw->Button(
   -text    => "Selections",
   -command => sub {
      my $selected1 = $list1->get( $list1->curselection );
      my $selected2 = $list2->get( $list2->curselection );
      print "selected-> $selected1 $selected2\n";
   }
)->pack( -side => 'left' );

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

MainLoop;
[download]

---

---

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! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

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:
	&		&
	<		&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.