(gobject:define-genum "GtkDirectionType" direction-type
  (:export t
   :type-initializer "gtk_direction_type_get_type")
  (:tab-forward 0)
  (:tab-backward 1)
  (:up 2)
  (:down 3)
  (:left 4)
  (:right 5))  

:tab-forward

Move forward.

:tab-backward

Move backward.

:up

Move up.

:down

Move down.

:left

Move left.

:right

Move right.