# File gtk/sample/testgtk/togglebutton.rb, line 36
  def initialize
    super("toggle buttons")

    set_border_width(5)

    vbox = Gtk::VBox.new(false, 5)
    add(vbox)

    (1..3).each do |i|
      vbox.add(Gtk::ToggleButton.new("button#{i}"))
    end
    vbox.pack_start(Gtk::HSeparator.new, false, true, 0)

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