#!/usr/bin/perl use warnings; use strict; use Tk; my $mw = tkinit; $mw->geometry("200x300+200+200"); $mw->overrideredirect(1); # set the override-redirect flag $mw->packPropagate(0); # prevent the window being resized # for this demo $mw->Button( -text => 'Quit', -command => sub { Tk::exit(0) }, )->pack( -side => 'bottom', ); MainLoop;