gtk:action-visible-horizontal (object)

object -- a gtk:action object
visible -- true to make the action visible horizontally

Accessor of the visible-horizontal slot of the gtk:action class. The gtk:action-visible-horizontal function checks whether the action is visible when horizontal. The (setf gtk:action-visible-horizontal) function sets the visibility. The gtk:action-visible-horizontal function has been deprecated since version 3.10 and should not be used in newly written code.