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

my $top = MainWindow->new;
$top->geometry('200x200+100+100');

# Menubar
my $menu = $top->Frame(-relief => 'raised', -bd => 2);

my $menu_pulldown = $menu->Menubutton(-text => "Test",
                 -underline => 0);

$menu_pulldown->command(-label => "Exit",
                     -command => sub { exit 0 });
# Cascade Menu
$menu_pulldown->cascade(-label => "Cascade",
                        -underline => 1,);
			
my $newmenu = $menu_pulldown->cget(-menu)->Menu;

$menu_pulldown->entryconfigure('last', -menu => $newmenu);

$newmenu->command(-label => "CascadeCommand",
       -command => sub { exit 0 });

$menu->pack(-side => 'top', -fill => 'x');

$menu_pulldown->pack(-side, 'left');

MainLoop;