/* call back function */
static cdUInt32	cdSTDCALL CamCallBackFunc(	cdEventID		EventID,
											const cdVoid*	pData,
											cdUInt32		DataSize,
											cdContext		Context );
static cdUInt32	cdSTDCALL RelCallBackFunc(	cdReleaseEventID	EventID,
											const void *		pData,
											cdUInt32 			DataSize,
											cdContext			Context );