#!/usr/bin/perl
use warnings;
use strict;
use Glib qw/TRUE FALSE/;
use Gtk2 '-init';

#not working

my $window = Gtk2::Window->new('toplevel');
$window->set_title('Z');
$window ->signal_connect( 'destroy' => \&delete_event );
$window->set_border_width(10);
$window->set_size_request(300,200);

my $vbox = Gtk2::VBox->new( FALSE, 6 );
$window->add($vbox);
$vbox->set_border_width(2);

my $hbox= Gtk2::HBox->new( FALSE, 6 );
$vbox->pack_end($hbox,FALSE,FALSE,0);
$hbox->set_border_width(2);

my $frame0 = Gtk2::Frame->new('Controls');
$vbox->pack_end( $frame0, FALSE, FALSE, 0 );
$frame0->set_border_width(3);

my $hbox0 = Gtk2::HBox->new( FALSE, 6 );
$frame0->add($hbox0);
$hbox0->set_border_width(3);

my $button = Gtk2::Button->new_from_stock('gtk-quit');
$hbox0->pack_end( $button, FALSE, FALSE, 0 );
$button->signal_connect( clicked => \&delete_event );

# creates its own adjustment
my ($value, $lower, $upper, $step_increment, $page_increment, $page_size)=
   ( 60,     0,       100 ,    1           , 1              , 0.0);
   	    
my $hadjustment = Gtk2::Adjustment->new(
 $value, $lower, $upper, $step_increment, 
 $page_increment, $page_size);
my $vadjustment = undef;

my $viewport = Gtk2::Viewport->new($hadjustment, $vadjustment);
$viewport->set_hadjustment($hadjustment);
# uses the newly-created adjustment for the scrollbar as well
my $vscrollbar = Gtk2::VScrollBar->new($viewport->get_vadjustment());

$vbox->pack_start($viewport,TRUE,TRUE,0);

$window->show_all();
Gtk2->main;
#####################################
sub delete_event {
Gtk2->main_quit;
return FALSE;
}