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1.\" $Id: TIFFSetDirectory.3tiff,v 1.2 2005/11/02 11:07:18 dron Exp $
2.\"
3.\" Copyright (c) 1988-1997 Sam Leffler
4.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
5.\"
6.\" Permission to use, copy, modify, distribute, and sell this software and
7.\" its documentation for any purpose is hereby granted without fee, provided
8.\" that (i) the above copyright notices and this permission notice appear in
9.\" all copies of the software and related documentation, and (ii) the names of
10.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
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14.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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21.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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23.\" OF THIS SOFTWARE.
24.\"
25.if n .po 0
26.TH TIFFSetDirectory 3TIFF "October 15, 1995" "libtiff"
27.SH NAME
28TIFFSetDirectory, TIFFSetSubDirectory \- set the current directory for an open
29.SM TIFF
30file
31.SH SYNOPSIS
32.B "#include <tiffio.h>"
33.sp
34.BI "int TIFFSetDirectory(TIFF *" tif ", tdir_t " dirnum ")"
35.br
36.BI "int TIFFSetSubDirectory(TIFF *" tif ", uint32 " diroff ")"
37.SH DESCRIPTION
38.I TIFFSetDirectory
39changes the current directory and reads its contents with
40.IR TIFFReadDirectory .
41The parameter
42.I dirnum
43specifies the subfile/directory as an integer number, with the first directory
44numbered zero.
45.PP
46.I TIFFSetSubDirectory
47acts like
48.IR TIFFSetDirectory ,
49except the directory is specified as a file offset instead of an index; this
50is required for accessing subdirectories linked through a
51.I SubIFD
52tag.
53.SH "RETURN VALUES"
54On successful return 1 is returned. Otherwise, 0 is returned if
55.I dirnum
56or
57.I diroff
58specifies a non-existent directory, or if an error was encountered while
59reading the directory's contents.
60.SH DIAGNOSTICS
61All error messages are directed to the
62.IR TIFFError (3TIFF)
63routine.
64.PP
65.BR "%s: Error fetching directory count" .
66An error was encountered while reading the ``directory count'' field.
67.PP
68.BR "%s: Error fetching directory link" .
69An error was encountered while reading the ``link value'' that points to the
70next directory in a file.
71.SH "SEE ALSO"
72.IR TIFFCurrentDirectory (3TIFF),
73.IR TIFFOpen (3TIFF),
74.IR TIFFReadDirectory (3TIFF),
75.IR TIFFWriteDirectory (3TIFF),
76.IR libtiff (3TIFF)
77.PP
78Libtiff library home page:
79.BR http://www.remotesensing.org/libtiff/