gtk-sharpGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.System.EnumGLib.GType(typeof(Gtk.AttachOptionsGType))System.FlagsDenotes the expansion properties that a will have when it (or its parent) is resized.FieldGtk.AttachOptionsThe should expand to take up any extra space in its container that has been allocated.FieldGtk.AttachOptionsThe should fill the space allocated to it.FieldGtk.AttachOptionsThe should shrink when possible.