#!/usr/local/bin/perl  -w
use Tk;
require Tk::TextUndo;

use Carp;

$SIG{__DIE__} = \&Carp::confess;

my $mw = MainWindow->new;


# Uncomment next line to avoid the warning - this a test of the warning
# use Tk::TextUndo;
my $t1 = $mw->Scrolled('TextUndo', -wrap => 'none');
my $lb = $mw->Scrolled('Listbox');
$lb->packAdjust(-side => 'left', -fill => 'both', -delay => 1);
$lb->bind('<Double-ButtonRelease-1>',sub { $t1->Load($lb->getSelected) });

$t1->pack(-side => 'right', -fill => 'both', -expand => 1);

opendir(DIR,'.');
my $name;
foreach $name (readdir(DIR))
 {
  $lb->insert('end',$name) if (-T $name);
 }
closedir(DIR);
MainLoop;