Tarkblog

require 'Qt'

class Smiley < Qt::Widget
  def paintEvent(e)
    p = Qt::Painter.new(self)
    p.setPen(Qt::blue)

    # Face
    p.drawEllipse(0,0, width-2, height-2)

    # Eyes
    p.drawEllipse(width / 3, height / 4,10,10)
    p.drawEllipse(width / 3 * 2, height / 4,10,10)

    # Nose
    p.drawEllipse(width / 2, height / 5 * 2, 10, 10)

    # Mouth
    p.drawArc(width/4, height / 3 * 2, width / 2, 50, -2880, 2880)

    p.dispose
    end
end

app = Qt::Application.new(ARGV)
s = Smiley.new(nil)
app.setMainWidget(s)
s.show
app.exec

gives us: