use Tk; require Tk::NoteBook; use strict; my $mw; die "\n" unless defined eval { $mw = MainWindow->new(-title=>"Window"); }; $mw->protocol('WM_DELETE_WINDOW',sub{exit}); $mw->optionAdd('*font'=>"Fixed 10"); my $statusBar = $mw->Frame(-relief=>"raised", -borderwidth=>2)-> pack(-expand=>1, -fill=>'x', -side=>'bottom', -anchor=>'s'); $statusBar->Label(-text=>"Progress: ")->pack(-side=>"left"); my $menubar = $mw->Menu; $mw->configure(-menu=>$menubar); my $file_menu = $menubar->cascade(-label => '~File', -tearoff => 0); ##### Code in Question #### my $notebook = $mw->NoteBook()->pack(-expand=>1,-fill=>'both'); my $setupPage = $notebook->add("page1", -label=>"Setup", -underline=>0); MainLoop;