Controls.ruby

class Component
  attr_accessor :position
end

class Control < Component
  attr_accessor :parent
end

class WinControl < Control
  attr_accessor :handle
end

module Paint
  attr_accessor :canvas
  def paint
    puts "Paint"
  end
end

module MButton
  def paint
    puts "Paint on canvas"
    canvas = 1; # tutaj czy mozna sie odwoływac
  end
end

class CustomControl < WinControl
  include Paint
end

class GraphicControl < Control
  include Paint
end

class Buttton < CustomControl
  include MButton
end;

class SpeedButtton < GraphicControl
  include MButton
end;