#!/usr/bin/env perl use Prima qw(Application Buttons MsgBox); my $window = Prima::MainWindow->new( text=>'Hello world!', menuItems=>[ '~File', [ ['~Open', 'Ctrl+O', '^O', sub{message('open!')}], ['~Save as...', sub{message('save as!')}] ] ], size=>[200, 200] ); $window->insert(Button=> text=>'Click me', growMode=>gm::Center, onClick=>sub{message("Hello!")} ); run Prima;