libqt4-ruby_first-test.rb

#!/usr/bin/ruby
require 'Qt4'
include Qt

Application.new ARGV do
    Widget.new do
        button_quit = PushButton.new 'Click me to quit' do 
            connect(SIGNAL :clicked) { Application.instance.quit }
        end

        self.layout = VBoxLayout.new do
            add_widget button_quit, 0, Qt::AlignCenter
        end

        set_window_title 'Ruby FTW!'
        resize 300, 50

        show
    end

    exec
end