.\" $Id: TIFFSetDirectory.3tiff,v 1.4 2017-06-30 17:40:02 erouault Exp $

.\"

.\" Copyright (c) 1988-1997 Sam Leffler

.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.

.\"

.\" Permission to use, copy, modify, distribute, and sell this software and 

.\" its documentation for any purpose is hereby granted without fee, provided

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.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  

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.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR

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.\"

.if n .po 0

.TH TIFFSetDirectory 3TIFF "October 15, 1995" "libtiff"

.SH NAME

TIFFSetDirectory, TIFFSetSubDirectory \- set the current directory for an open

.SM TIFF

file

.SH SYNOPSIS

.B "#include <tiffio.h>"

.sp

.BI "int TIFFSetDirectory(TIFF *" tif ", tdir_t " dirnum ")"

.br

.BI "int TIFFSetSubDirectory(TIFF *" tif ", uint64 " diroff ")"

.SH DESCRIPTION

.I TIFFSetDirectory

changes the current directory and reads its contents with

.IR TIFFReadDirectory .

The parameter

.I dirnum

specifies the subfile/directory as an integer number, with the first directory

numbered zero.

.PP

.I TIFFSetSubDirectory

acts like 

.IR TIFFSetDirectory ,

except the directory is specified as a file offset instead of an index; this

is required for accessing subdirectories linked through a

.I SubIFD

tag.

.SH "RETURN VALUES"

On successful return 1 is returned. Otherwise, 0 is returned if 

.I dirnum

or

.I diroff

specifies a non-existent directory, or if an error was encountered while

reading the directory's contents.

.SH DIAGNOSTICS

All error messages are directed to the

.IR TIFFError (3TIFF)

routine.

.PP

.BR "%s: Error fetching directory count" .

An error was encountered while reading the ``directory count'' field.

.PP

.BR "%s: Error fetching directory link" .

An error was encountered while reading the ``link value'' that points to the

next directory in a file.

.SH "SEE ALSO"

.IR TIFFCurrentDirectory (3TIFF),

.IR TIFFOpen (3TIFF),

.IR TIFFReadDirectory (3TIFF),

.IR TIFFWriteDirectory (3TIFF),

.IR libtiff (3TIFF)

.PP

Libtiff library home page:

.BR http://www.simplesystems.org/libtiff/