# File gtk/sample/testgtk/range.rb, line 36
  def initialize
    super("range controls")

    vbox = Gtk::VBox.new(false, 10)
    add(vbox)

    adjustment = Gtk::Adjustment.new(0.0, 0.0, 101.0, 0.1, 1.0, 1.0)

    scale = Gtk::HScale.new(adjustment)
    scale.set_size_request(150, 50)
    scale.update_policy = Gtk::UPDATE_DELAYED
    scale.digits = 1
    scale.draw_value = true

    vbox.add(scale)

    scrollbar = Gtk::HScrollbar.new(adjustment)
    scrollbar.update_policy = Gtk::UPDATE_CONTINUOUS
    vbox.add(scrollbar)

    vbox.add(Gtk::HSeparator.new)

    button = Gtk::Button.new("close")
    button.signal_connect("clicked"){destroy}

    vbox.pack_start(button, true, true, 0)
    button.can_default = true
    button.grab_default
  end