open/4 option: seek(SeekType) QP_stream: unsigned char seek_type
This field specifies which type of seeking can be performed on the stream.
The possible values for
open/4. It is an error to perform any type of seeking operation on the stream. Any call to
QP_setpos()is an error.
open/4. The stream only seeks back to a previous read or written position. The previous position must be saved through
stream_position/[2,3]. The seeking can only be performed through
open/4. The stream can seek to any arbitrary byte offset in the file or to any previously saved position. In addition to the seeking method described in
QP_SEEK_PREVIOUS, the stream can also seek through
open/4. The stream can seek to an arbitrary record number in the file or to any previously saved position.
The seek function must be supplied for a user-defined stream
seek_type set to any value other than