.\" $Header: /cvs/maptools/cvsroot/libtiff/man/Attic/TIFFError.3t,v 1.1 1999-07-27 21:50:27 mike Exp $
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.if n .po 0
.TH TIFFError 3T "October 15, 1995"
.SH NAME
TIFFError, TIFFSetErrorHandler \- library error handling interface
.SH SYNOPSIS
.B "#include <tiffio.h>"
.br
.B "void TIFFError(const char* module, const char* fmt, ...)"
.sp .5
.B "#include <stdarg.h>"
.br
.B "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"
.IR libtiff (3T),
.IR TIFFWarning (3T),
.IR printf (3S)