#!/usr/bin/perl -w

use strict;
use Gtk2 '-init';
use Gtk2::Helper;
use Data::Dumper;
use IPC::Open2;
use FileHandle;

# file handles
my $wfh = FileHandle->new();
my $rfh = FileHandle->new();
open2($rfh,$wfh, "C:\\Windows\\System32\\cmd.exe");


my $window = Gtk2::Window->new();
$window->signal_connect("destroy",sub{Gtk2->main_quit();});
$window->set_size_request(200,200);
	my $vbox = Gtk2::VBox->new();
	$window->add($vbox);
		my $button = Gtk2::Button->new("WRITE");
		$button->signal_connect('clicked'=>sub{
				write_fh();
			});
		$vbox->pack_start($button,0,0,0);
		$button = Gtk2::Button->new("READ");
		$button->signal_connect('clicked'=>sub{
				read_fh();
			});
		$vbox->pack_start($button,0,0,0);
		
$window->show_all();
Gtk2->main();

sub write_fh {
	print $wfh "dir\n";
}

sub read_fh {
	my $buffer;
	my $resp = sysread($rfh,$buffer,1);
	if($resp){
		if($buffer =~ /\n/){
			print "newline\n";
		}
	}
	print "[$resp]$buffer\n";
}