+ /**
+ Set if user can change the property's value to unspecified by
+ modifying the value of the editor control (usually by clearing
+ it). Currently, this can work with following properties:
+ wxIntProperty, wxUIntProperty, wxFloatProperty, wxEditEnumProperty.
+
+ @param enable
+ Whether to enable or disable this behaviour (it is disabled by
+ default).
+ */
+ void SetAutoUnspecified( bool enable = true );
+