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#!/usr/bin/env perl
#
# Simple Tk script to create a button that prints "Hello, world". Click on
# the button to terminate the program.
#
# The first line below imports the Tk objects into the application, the second
# line creates the main window, the third through sixth lines create the button
# and defines the code to execute when the button is pressed, the seventh line
# asks the packer to shrink-wrap the application's main window around the
# button, and the eight line starts the event loop.
use Tk;
$MW = MainWindow->new;
$hello = $MW->Button(
-text => 'Hello, world',
-command => sub {print STDOUT "Hello, world\n"; exit;},
);
$hello->pack;
MainLoop;
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