gdk-sharp 2.10.0.0 Gtk# 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.Enum GLib.GType(WrapperType=typeof(Gdk.PropertyStateGType)) Field Gdk.PropertyState The property value was changed. Field Gdk.PropertyState The property value was deleted.