gtk:tool-item-group-header-relief (object)

group -- a gtk:tool-item-group widget
object -- a value of the gtk:relief-style enumeration

Accessor of the header-relief slot of the gtk:tool-item-group class. The gtk:tool-item-group-header-relief function gets the relief mode of the header button of the tool item group. The (setf gtk:tool-item-group-header-relief) function sets the button relief of the group header.