TIFFSetSubDirectory

TIFFSetDirectory(3T)                                      TIFFSetDirectory(3T)



NAME
       TIFFSetDirectory,  TIFFSetSubDirectory  - set the current directory for
       an open TIFF file

SYNOPSIS
       #include <tiffio.h>
       int TIFFSetDirectory(TIFF* tif, tdir_t dirnum)
       int TIFFSetSubDirectory(TIFF* tif, uint32 diroff)

DESCRIPTION
       TIFFSetDirectory changes the current directory and reads  its  contents
       with  TIFFReadDirectory.   The  parameter  dirnum  specifies  the  sub-
       file/directory as an integer number, with the first directory  numbered
       zero.

       TIFFSetSubDirectory acts like TIFFSetDirectory, except the directory is
       specified as a file offset instead of an index; this  is  required  for
       accessing subdirectories linked through a SubIFD tag.

RETURN VALUES
       On successful return 1 is returned.  Otherwise, 0 is returned if dirnum
       or diroff specifies a  non-existent  directory,  or  if  an  error  was
       encountered while reading the directory's contents.

DIAGNOSTICS
       All error messages are directed to the TIFFError(3T) routine.

       %s:  Error  fetching  directory  count.  An error was encountered while
       reading the ``directory count'' field.

       %s: Error fetching directory link.   An  error  was  encountered  while
       reading the ``link value'' that points to the next directory in a file.

SEE ALSO
       libtiff(3T),  TIFFCurrentDirectory(3T),  TIFFOpen(3T),   TIFFReadDirec-
       tory(3T), TIFFWriteDirectory(3T)



                               October 15, 1995           TIFFSetDirectory(3T)