PPT_LOGO_4b
•MarshalByRefObject
•      DisposableWrapper
•         RXObject
•            ImpObject
•               PropertyDefinition
•               PropertySetData
•   MarshalByRefObject
      DisposableWrapper
         RXObject
            Drawable
               DBObject
                  DBObject
                     DictionaryRecord
                        PropertySet
•                        PropertySetDefinition
主要类的继承图