Inside Macintosh: Interapplication Communication /

Chapter 12 - Data Access Manager / Data Access Manager Reference

Data Access Manager Routines / Low-Level Interface: Controlling the Session

DBEnd

You must call the DBEnd function to terminate a session.

FUNCTION DBEnd (sessID: LongInt; 
                asyncPB: DBAsyncParmBlkPtr): OSErr;

sessID

The session ID that was returned by the DBInit function.

asyncPB

A pointer to an asynchronous parameter block. If you do not want to call the function asynchronously, set this parameter to NIL.

DESCRIPTION

The DBEnd function terminates a session with a data server and terminates the network connection between the application and the host computer.

SPECIAL CONSIDERATIONS

The DBEnd function may move or purge memory. You should not call this routine from within an interrupt, such as in a completion routine or a VBL task.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for the DBEnd function are

Trap macro	Selector
_DBEnd	$0403

RESULT CODES

noErr	0	No error
rcDBError	-802	Error ending session
rcDBBadSessID	-806	Session ID is invalid
rcDBAsyncNotSupp	-809	The database extension does not support asynchronous calls
rcDBPackNotInited	-813	The InitDBPack function has not yet been called

SEE ALSO

For a description of the asynchronous parameter block, see page 12-56.