gdk-sharpGtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.System.EnumGLib.GType(typeof(Gdk.SettingActionGType))Specifies the kind of modification applied to a setting in a .None.FieldGdk.SettingActionA setting was changed.FieldGdk.SettingActionA setting was deleted.FieldGdk.SettingActionA setting was added.