Specifies open modes of the associated file of the multi-page image file.

Values:

IG_MP_OPENMODE_NONE	There is no association with multi-page image file.
IG_MP_OPENMODE_READONLY	Associated file has been opened with read-only access mode.
IG_MP_OPENMODE_READWRITE	Associated file has been opened with read-write access mode.

Remarks:

See IG_mpi_file_open for more details.