gtk:tool-item-visible-horizontal (object)

object -- a gtk:tool-item widget
visible -- a boolean whether object is visible when in horizontal mode

Accessor of the visible-horizontal slot of the gtk:tool-item class. The gtk:tool-item-visible-horizontal function returns whether the tool item is visible on toolbars that are docked horizontally. The (setf gtk:tool-item-visible-horizontal) function sets whether the tool item is visible when the toolbar is docked horizontally.