Determines the current logical end-of-file of an open file.

OSErr PBGetEOFAsync (
    ParmBlkPtr paramBlock
);

paramBlock

A pointer to a basic File Manager parameter block.

function result

A result code.

DISCUSSION

The relevant fields of the parameter block are:

• ioCompletion

  On input, a pointer to a completion routine.

• ioResult

  On output, the result code of the function.

• ioRefNum

  On input, a file reference number for the file whose logical end you wish to determine.

• ioMisc

  On output, the logical end-of-file. Because ioMisc is of type Ptr, you’ll need to coerce the value to type LongInt to interpret the value correctly.

AVAILABILITY

Supported in Carbon. Available in Mac OS 8.1 and later when Carbon 1.0.2 or later is present.

© 2000 Apple Computer, Inc. — (Last Updated 5/8/2000)