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

use utf8;
use Tk;

my $hallo = "Hallöchen";

my $fenster   = MainWindow->new();

my $eingabe   = $fenster->Entry()->pack();
my $schalter  = $fenster->Button(-text    => $hallo, -command =>\&loeschen)->pack();

sub loeschen
	{
	my $text = $eingabe -> get;
	print $text . "\n";
	}

MainLoop();