# File glib/tests/test-glib2.rb, line 69
  def test_inheritance_and_gc
    begin 
      require 'gtk2'

      mybutton = Class.new(Gtk::Button)
      box = Gtk::HBox.new
      10.times{
        box.add mybutton.new
      }
      GC.start
      assert(box.children.all?{|item| item.is_a? mybutton })
    rescue LoadError
    end
  end