#!/usr/bin/env ruby require 'Qt4' app = Qt::Application.new(ARGV) window = Qt::Widget.new() window.resize(200, 120) quit = Qt::PushButton.new('Quit', window) quit.font = Qt::Font.new('Times', 18, Qt::Font::Bold) quit.setGeometry(10, 40, 180, 40) Qt::Object.connect(quit, SIGNAL('clicked()'), app, SLOT('quit()')) window.show() app.exec()