use strict;
use warnings;

use Tk qw(MainLoop); 

 my $mw = MainWindow->new(-title => " Listbox Height-Change Test");
 
 my $myFont = "{Lucida Fax} 12 bold";
 my ($lb, $lbw);

 $mw->Button(-text => 'Print Height',
       -font => $myFont,
       -command => sub { print "HEIGHT: ", $lb->cget(-height), "\n"; }, 
       )->pack();
         
 $mw->Button(-text => 'Change Height',
       -font => $myFont,
       -command => sub { $lb->configure(-height=>5); }, 
       )->pack();
         
  my @items = ("thing1", "THing2", "THING3");

 $lb = $mw->Scrolled('Listbox', 
           -font => $myFont, 
           -background => 'darkblue',
           -foreground => 'white',
           -scrollbars => 'osoe',
           -height => 15,
           -width => 28,
           -borderwidth => 1, 
           -relief => 'solid',
          )->pack();
 
 # $lbw = $lb->Subwidget('listbox');

 $lb->delete(0,'end');

 my $num = 0;
 $lb->insert('end', sprintf("%3d. $_\n", ++$num)) for (@items);
 
 MainLoop();