Warning gtk_notebook_get_group_id has been deprecated since version 2.12 and should not be used in newly-written code. use gtk_notebook_get_group_name() instead. Gets the current group identificator for notebook. Since 2.10
the group identificator, or -1 if none is set.
See Implementation
Warning gtk_notebook_get_group_id has been deprecated since version 2.12 and should not be used in newly-written code. use gtk_notebook_get_group_name() instead. Gets the current group identificator for notebook. Since 2.10