use strict;
use warnings;
use Tk;
require Tk::NoteBook;

my $main = MainWindow->new( );

my $nb = $main->NoteBook(-takefocus => 0 )->pack(-expand => 1, -fill => 'both');

my $page1 = $nb->add('page1', -label => 'Page 1');

$page1->Entry()->pack();
$page1->Entry()->pack();
$page1->Entry()->pack();
$page1->Entry(-takefocus => 0)->pack();

$nb->add('page2', -label => 'Page 2');

MainLoop;