gdk-sharp2.8.0.0Gtk# is thread aware, but not thread safe; See the Gtk# Thread Programming for details.Specifies the type of a property change for a .None.System.EnumGLib.GType(WrapperType=typeof(Gdk.PropertyStateGType))FieldGdk.PropertyStateThe property value was changed.FieldGdk.PropertyStateThe property value was deleted.