require 'gtk2'
include Gtk

class GLib::Object
  signal_new('my_super_action',
    GLib::Signal::RUN_FIRST,
    nil,
    GLib::Type['void'])
  def signal_do_my_super_action
  end
end

class GeneralWindow < Window
  def initialize(*args)
    super
    signal_connect("delete_event"){Gtk.main_quit}

    add ToolsPanel.new
    signal_connect('my_super_action'){puts "aaa"}
  end
end

class ToolsPanel < Toolbar
  def initialize(*args)
    super
    append("but"){signal_emit('my_super_action')}
  end
end

GeneralWindow.new.show_all
Gtk.main