libtiff/man/TIFFError.3tiff

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.\" $Id: TIFFError.3tiff,v 1.3 2016-09-25 20:05:49 bfriesen Exp $
2004-11-11 09:39:16 -05:00
.\"
.\" Copyright (c) 1988-1997 Sam Leffler
.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
.\"
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.\" its documentation for any purpose is hereby granted without fee, provided
.\" that (i) the above copyright notices and this permission notice appear in
.\" all copies of the software and related documentation, and (ii) the names of
.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
.\" publicity relating to the software without the specific, prior written
.\" permission of Sam Leffler and Silicon Graphics.
.\"
.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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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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.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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.\"
.if n .po 0
.TH TIFFError 3TIFF "October 15, 1995" "libtiff"
.SH NAME
TIFFError, TIFFSetErrorHandler \- library error handling interface
.SH SYNOPSIS
.B "#include <tiffio.h>"
.sp
.BI "void TIFFError(const char *" module ", const char *" fmt ", " ... ")"
.sp
.B "#include <stdarg.h>"
.sp
.BI "typedef void (*TIFFErrorHandler)(const char *" module ", const char *" fmt ", va_list " ap ");"
.br
.B "TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler handler);"
.SH DESCRIPTION
.I TIFFError
invokes the library-wide error handling function to (normally) write an error
message to the
.BR stderr .
The
.I fmt
parameter is a
.IR printf (3S)
format string, and any number arguments can be supplied. The
.I module
parameter, if non-zero, is printed before the message; it typically is used to
identify the software module in which an error is detected.
.PP
Applications that desire to capture control in the event of an error should
use
.IR TIFFSetErrorHandler
to override the default error handler.
A
.SM NULL
(0) error handling function may be installed to suppress error messages.
.SH "RETURN VALUES"
.IR TIFFSetErrorHandler
returns a reference to the previous error handling function.
.SH "SEE ALSO"
2005-11-02 06:07:18 -05:00
.BR TIFFWarning (3TIFF),
.BR libtiff (3TIFF),
.BR printf (3)
.PP
Libtiff library home page:
.BR http://www.simplesystems.org/libtiff/