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TIFFSETTAGEXTENDER(3tiff) LibTIFF TIFFSETTAGEXTENDER(3tiff)

NAME

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

SYNOPSIS

#include <tiffio.h>



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 <#define-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

September 18, 2025 4.7