This book does not describe base class objects whose primary function is to provide generic properties and functions for descendent objects, since these objects typically are not used in applications. The base class system objects not described in this book are:
ClassDefinitionObject
ConnectObject
DragObject
DrawObject
DWObject
ExtObject
Function_Object
GraphicObject
GPS
NonVisualObject
OmControl
OmCustomControl
OmEmbeddedControl
OmObject
OmStorage
OmStream
ORB
PBtoCPPObject
PowerObject
RemoteObject
Service
Structure
WindowObject
