# File gtk/sample/gtk-demo/list_store.rb, line 69
    def create_model
      # create list store
      store = Gtk::ListStore.new(TrueClass, Integer, String, String)

      # add data to the list store
      DATA.each do |bug|
        iter = store.append
        bug.each_with_index do |value, index|
          iter[index] = value
        end
      end
      return store
    end