Inside Macintosh: Files /

Chapter 2 - File Manager / File Manager Reference

Low-Level HFS Routines / Maintaining Working Directories

PBCloseWD

You can use the PBCloseWD function to close a working directory.

FUNCTION PBCloseWD (paramBlock: WDPBPtr; async: Boolean): OSErr;

paramBlock

A pointer to a working directory parameter block.

async

A Boolean value that specifies asynchronous (TRUE) or synchronous (FALSE) execution.

-->	ioCompletion	ProcPtr	A pointer to a completion routine.
<--	ioResult	OSErr	The result code of the function.
-->	ioVRefNum	Integer	A working directory reference number.

DESCRIPTION

The PBCloseWD function releases the working directory whose working directory reference number is specified in ioVRefNum.

Note

If you specify a volume reference number in the ioVRefNum field, PBCloseWD does nothing.

ASSEMBLY-LANGUAGE INFORMATION

The trap macro and routine selector for PBCloseWD are

Trap macro	Selector
_HFSDispatch	$0002

RESULT CODES

noErr	0	No error
nsvErr	-35	No such volume
rfNumErr	-51	Bad working directory reference number