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<!-- CreationDate: Fri Jul 13 17:43:17 2007 -->
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<title>TIFFSetField</title>
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<body>
<h1 align=center>TIFFSetField</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#RETURN VALUES">RETURN VALUES</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
<a name="NAME"></a>
<h2>NAME</h2>
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<td width="8%"></td>
<td width="91%">
<p>TIFFSetField, TIFFVSetField − set the value(s) of a
tag in a <small>TIFF</small> file open for writing</p>
</td>
</table>
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
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<p><b>#include <tiffio.h></b></p>
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<p><b>int TIFFSetField(TIFF *</b><i>tif</i><b>, ttag_t</b>
<i>tag</i><b>,</b> <i>...</i><b>)</b></p>
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<p><b>#include <stdarg.h></b></p>
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<p><b>int TIFFVSetField(TIFF *</b><i>tif</i><b>, ttag_t</b>
<i>tag</i><b>, va_list</b> <i>ap</i><b>)</b></p>
</td>
</table>
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
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<td width="8%"></td>
<td width="91%">
<p><i>TIFFSetField</i> sets the value of a field or
pseudo-tag in the current directory associated with the open
<small>TIFF</small> file <i>tif</i>. (A <i>pseudo-tag</i> is
a parameter that is used to control the operation of the
<small>TIFF</small> library but whose value is not read or
written to the underlying file.) To set the value of a field
the file must have been previously opened for writing with
<i>TIFFOpen</i>(3TIFF); pseudo-tags can be set whether the
file was opened for reading or writing. The field is
identified by <i>tag</i>, one of the values defined in the
include file <b>tiff.h</b> (see also the table below). The
actual value is specified using a variable argument list, as
prescribed by the <i>stdarg</i>(3) interface (or, on some
machines, the <i>varargs</i>(3) interface.)</p>
<!-- INDENTATION -->
<p><i>TIFFVSetField</i> is functionally equivalent to
<i>TIFFSetField</i> except that it takes a pointer to a
variable argument list. <i>TIFFVSetField</i> is useful for
writing routines that are layered on top of the
functionality provided by <i>TIFFSetField</i>.</p>
<!-- INDENTATION -->
<p>The tags understood by <i>libtiff</i>, the number of
parameter values, and the expected types for the parameter
values are shown below. The data types are: <i>char*</i> is
null-terminated string and corresponds to the
<small>ASCII</small> data type; <i>uint16</i> is an unsigned
16-bit value; <i>uint32</i> is an unsigned 32-bit value;
<i>uint16*</i> is an array of unsigned 16-bit values.
<i>void*</i> is an array of data values of unspecified
type.</p>
<!-- INDENTATION -->
<p>Consult the <small>TIFF</small> specification for
information on the meaning of each tag.</p></td>
</table>
<!-- TABS -->
<p><i>Tag Name Count Types Notes</i></p>
<!-- TABS -->
<table width="100%" border=0 rules="none" frame="void"
cols="5" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_ARTIST</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_BADFAXLINES</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_BITSPERSAMPLE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_CLEANFAXDATA</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_COLORMAP</p>
</td>
<td width="8%">
<p>3</p>
</td>
<td width="24%">
<p>uint16*</p>
</td>
<td width="16%">
<p>1<<BitsPerSample arrays</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_COMPRESSION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_CONSECUTIVEBADFAXLINES</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_COPYRIGHT</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_DATETIME</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_DOCUMENTNAME</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_DOTRANGE</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_EXTRASAMPLES</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16,uint16*</p>
</td>
<td width="16%">
<p>† count & types array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_FAXFILLFUNC</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>TIFFFaxFillFunc</p>
</td>
<td width="16%">
<p>G3/G4 compression pseudo-tag</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_FAXMODE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>int</p>
</td>
<td width="16%">
<p>† G3/G4 compression pseudo-tag</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_FILLORDER</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_GROUP3OPTIONS</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_GROUP4OPTIONS</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_HALFTONEHINTS</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_HOSTCOMPUTER</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_ICCPROFILE</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint32,void*</p>
</td>
<td width="16%">
<p>count, profile data</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_IMAGEDEPTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_IMAGEDESCRIPTION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_IMAGELENGTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_IMAGEWIDTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_INKNAMES</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16, char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_INKSET</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_JPEGCOLORMODE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>int</p>
</td>
<td width="16%">
<p>† JPEG pseudo-tag</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_JPEGQUALITY</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>int</p>
</td>
<td width="16%">
<p>JPEG pseudo-tag</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_JPEGTABLES</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint32*,void*</p>
</td>
<td width="16%">
<p>† count & tables</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_JPEGTABLESMODE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>int</p>
</td>
<td width="16%">
<p>† JPEG pseudo-tag</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_MAKE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_MATTEING</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_MAXSAMPLEVALUE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_MINSAMPLEVALUE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_MODEL</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_ORIENTATION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PAGENAME</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PAGENUMBER</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PHOTOMETRIC</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PHOTOSHOP</p>
</td>
<td width="8%">
<p>?</p>
</td>
<td width="24%">
<p>uint32,void*</p>
</td>
<td width="16%">
<p>count, data</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PLANARCONFIG</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PREDICTOR</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_PRIMARYCHROMATICITIES</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float*</p>
</td>
<td width="16%">
<p>6-entry array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_REFERENCEBLACKWHITE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float*</p>
</td>
<td width="16%">
<p>† 2*SamplesPerPixel array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_RESOLUTIONUNIT</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_RICHTIFFIPTC</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint32,void*</p>
</td>
<td width="16%">
<p>count, data</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_ROWSPERSTRIP</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>† must be > 0</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SAMPLEFORMAT</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SAMPLESPERPIXEL</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>† value must be <= 4</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SMAXSAMPLEVALUE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>double</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SMINSAMPLEVALUE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>double</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SOFTWARE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_STONITS</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>double</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SUBFILETYPE</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_SUBIFD</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16,uint32*</p>
</td>
<td width="16%">
<p>count & offsets array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_TARGETPRINTER</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>char*</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_THRESHHOLDING</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_TILEDEPTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_TILELENGTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>† must be a multiple of 8</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_TILEWIDTH</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint32</p>
</td>
<td width="16%">
<p>† must be a multiple of 8</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_TRANSFERFUNCTION</p>
</td>
<td width="8%">
<p>1 or 3‡ uint16*</p>
</td>
<td width="24%"></td>
<td width="16%">
<p>1<<BitsPerSample entry arrays</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_WHITEPOINT</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float*</p>
</td>
<td width="16%">
<p>2-entry array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_XMLPACKET</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint32,void*</p>
</td>
<td width="16%">
<p>count, data</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_XPOSITION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_XRESOLUTION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_YCBCRCOEFFICIENTS</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float*</p>
</td>
<td width="16%">
<p>† 3-entry array</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_YCBCRPOSITIONING</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_YCBCRSAMPLING</p>
</td>
<td width="8%">
<p>2</p>
</td>
<td width="24%">
<p>uint16</p>
</td>
<td width="16%">
<p>†</p>
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_YPOSITION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float</p>
</td>
<td width="16%">
</td>
<tr valign="top" align="left">
<td width="8%"></td>
<td width="41%">
<p>TIFFTAG_YRESOLUTION</p>
</td>
<td width="8%">
<p>1</p>
</td>
<td width="24%">
<p>float</p>
</td>
<td width="16%">
</td>
</table>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>† Tag may not have its values changed once data is
written.<br>
‡ If <i>SamplesPerPixel</i> is one, then a single
array is passed; otherwise three arrays should be
passed.<br>
* The contents of this field are quite complex. See <b>The
ICC Profile Format Specification</b>, Annex B.3
"Embedding ICC Profiles in TIFF Files" (available
at http://www.color.org) for an explanation.</p>
</td>
</table>
<a name="RETURN VALUES"></a>
<h2>RETURN VALUES</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>1 is returned if the operation was successful. Otherwise,
0 is returned if an error was detected.</p>
</td>
</table>
<a name="DIAGNOSTICS"></a>
<h2>DIAGNOSTICS</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p>All error messages are directed to the
<b>TIFFError</b>(3TIFF) routine.</p>
<!-- INDENTATION -->
<p><b>%s: Cannot modify tag "%s" while
writing</b>. Data has already been written to the file, so
the specified tag’s value can not be changed. This
restriction is applied to all tags that affect the format of
written data.</p>
<!-- INDENTATION -->
<p><b>%d: Bad value for "%s"</b>. An invalid value
was supplied for the named tag.</p>
</td>
</table>
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
<!-- INDENTATION -->
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="8%"></td>
<td width="91%">
<p><b>TIFFOpen</b>(3TIFF), <b>TIFFGetField</b>(3TIFF),
<b>TIFFSetDirectory</b>(3TIFF),
<b>TIFFWriteDirectory</b>(3TIFF),
<b>TIFFReadDirectory</b>(3TIFF), <b>libtiff</b>(3TIFF)</p>
<!-- INDENTATION -->
<p>Libtiff library home page:
<b>http://www.remotesensing.org/libtiff/</b></p>
</td>
</table>
<hr>
</body>
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