TIFFSETTAGEXTENDER(3tiff)

NAME
TIFFSetTagExtender - register the merge function for user defined tags as an extender callback with libtiff

SYNOPSIS

#include <tiffio.h>

TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc extender)

DESCRIPTION

TIFFSetTagExtender() is used to register the merge function for user defined tags as an extender callback with libtiff. A brief description can be found at Defining Application Tags.

NOTE: TIFFSetTagExtender() cannot be used to extend custom directories (for example EXIF, GPS or other custom directories). Only the TIFF directory can be extended with additional tags.

SEE ALSO

libtiff (3tiff), Defining New TIFF Tags (3tiff), TIFFMergeFieldInfo (3tiff)

AUTHOR
LibTIFF contributors

COPYRIGHT
1988-2025, LibTIFF contributors