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

object -- a gtk:tool-item widget
visible -- a boolean whether object is visible when the toolbar is in vertical mode

Accessor of the visible-vertical slot of the gtk:tool-item class. The gtk:tool-item-visible-vertical function returns whether the tool item is visible when the toolbar is docked vertically. The (setf gtk:tool-item-visible-vertical) function sets whether the tool item is visible when the toolbar is docked vertically.

Some tool items, such as text entries, are too wide to be useful on a vertically docked toolbar. If the visible argument is false the tool item will not appear on toolbars that are docked vertically.