gtk:notebook-action-widget (notebook pack-type)

notebook -- a gtk:notebook widget
pack-type -- a value of the gtk:pack-type enumeration for the action
widget -- a gtk:widget object

Accessor of the action widget of the notebook. The gtk:notebook-action-widget function gets one of the action widgets. The (setf gtk:notebook-action-widget) function sets the widget as one of the action widgets. Depending on the pack type the widget will be placed before or after the tabs. You can use a gtk:box widget if you need to pack more than one widget on the same side.

Note that action widgets are "internal" children of the notebook and thus not included in the list returned from the gtk:container-foreach function.