code challenge

Do something graphical in 50 lines of readable normally formatted code, don't count whitespace or lines with a single character(like a closing brace).

[code]require "qt"
require "singleton"
class MainWindow < Qt::Widget
  include Singleton
  def initialize
    super
    resize 640, 480
  end
end

app = Qt::Application.new ARGV
MainWindow.instance.show
app.exec