# this is all documented under Tk::bind
$mw->bind('<3>', [\&callback, Ev('X'), Ev('Y'), Ev('W')]);

##</code><code>##

#!/usr/bin/perl

use Tk;
use Tk::Menu;

$mw = MainWindow->new();

$menu = $mw->Menu(-tearoff => 0);
$menu->add('separator');
$menu->add('command', -label => 'One', -command => \&item1);
$menu->add('command', -label => 'Two', -command => \&item2);

$mw->Label(-text => 'Label 1')->pack();
$mw->Label(-text => 'Label 2')->pack();
$mw->Label(-text => 'Label 3')->pack();

$mw->bind('<3>', [\&showmenu, Ev('X'), Ev('Y'), Ev('W')]);
$mw->focus();
MainLoop;

sub showmenu {
  my ($self, $x, $y, $widget) = @_;
  my $label = $widget->cget('text');
  $menu->insert(0, 'command',
    -label => $label,
    -command => sub { print "Clicked $label.\n" },
  );
  $menu->post($x, $y);
  $menu->delete(0,0);
}

sub item1 { print "Item 1!\n" }
sub item2 { print "Item 2!\n" }