anchor.diff:    (:metaclass child-class))
   
   
  -
  -; (defclass statusbar hbox)
  -
  +(defclass statusbar (hbox)
  +  ()
  +  (:metaclass container-class)
  +  (:alien-name "GtkStatusbar"))
  +
  +(defclass statusbar-child (hbox-child)
  +  ()
  +  (:metaclass child-class))
  +
  +;; CList and CTree is deprecated
   ; (defclass clist container
   ;   :c-name "GtkCList"
   ;   :c-prefix "gtk_clist_"
  
positive.code:     :allocation :arg
      :initarg :group
  ;    :access :write-only
      :type pointer)) ;radio-button-group))
    (:metaclass container-class)
    (:alien-name "GtkRadioButton"))
  
  
negative.code:   ()
    (:metaclass child-class))
  
  
  (defclass vbutton-box (button-box)
    ()
    (:metaclass container-class)
    (:alien-name "GtkVButtonBox"))
  
  (defclass vbutton-box-child (button-box-child)
    ()
    (:metaclass child-class))
  
  
  (defclass vbox (box)
    ()
    (:metaclass container-class)
  