# TIFFWarning

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
SEE ALSO

## NAME

| TIFFWarning, TIFFSetWarningHandler - library warning interface

## SYNOPSIS

| #include <tiffio.h> void TIFFWarning(const char* module, const char* fmt, ...)

| #include <stdargh.h> typedef void (*TIFFWarningHandler)(const char* module, const char* fmt, va_list ap); TIFFWarningHandler TIFFSetWarningHandler(TIFFWarningHandler handler);

## DESCRIPTION

| TIFFWarning invokes the library-wide warning handler function to (normally) write a warning message to the stderr. The fmt parameter is a printf(3S) format string, and any number arguments can be supplied. The module parameter is interpreted as a string that, if non-zero, should be printed before the message; it typically is used to identify the software module in which a warning is detected.

| Applications that desire to capture control in the event of a warning should use TIFFSetWarningHandler to override the default warning handler. A NULL (0) warning handler function may be installed to suppress error messages.

## RETURN VALUES

| TIFFSetWarningHandler returns a reference to the previous error handling function.

## SEE ALSO

| libtiff(3T), TIFFError(3T), printf(3S)