====== Referenzen ======
  * http://library.gnome.org/devel/gtk/stable/
    * Symbole: http://library.gnome.org/devel/gtk/2.11/gtk-Stock-Items.html
  * http://library.gnome.org/devel/gobject/stable/
  * http://library.gnome.org/devel/glib/stable/