gtk-sharp2.10.0.0Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.An enumeration of tabs that can be found in every .System.EnumGLib.GType(WrapperType=typeof(Gtk.NotebookTabGType))FieldGtk.NotebookTabThe first tab.FieldGtk.NotebookTabThe last tab.