gdk-sharp 2.12.0.0 Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details. Specifies the kind of modification applied to a setting in a . None. System.Enum GLib.GType(typeof(Gdk.SettingActionGType)) Field Gdk.SettingAction A setting was added. Field Gdk.SettingAction A setting was changed. Field Gdk.SettingAction A setting was deleted.