Sets @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 #GtkBox 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 gtk_container_foreach().
Sets @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 #GtkBox 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 gtk_container_foreach().