All records have a special mark status. This status is the same for all buffers which have access to that record, and can have a value between zero and 255. If a mark status is zero, we say it is cleared.
Sbasic value = GETmark(#bufferid) Assembler GMRK bufferid return byte value C long DDgetmark(long bufferid, char *result); errors, code, meaning itnf -7 invalid bufferid
The mark status will only be changed in the file after implementing !!
The mark status is an unsigned byte, so a value between 0-255, and is called clear when it is zero.
Sbasic SETmark(#bufferid, value) value : short Assembler SMRK bufferid byte value C long DDsetmark(long bufferid, char value); errors, code, meaning itnf -7 invalid bufferid
You can also clear the mark status for all records in the file. Note that locked records may not be affected when they are re-implemented.
Sbasic CLEARmark(#bufferid) Assembler CMRK bufferid C long DDclearmark(long bufferid); errors, code, meaning itnf -7 invalid bufferid isyn -21 internal file structure corrupted (should not occur) ... any file i/o error (should not occur)PROGS, Professional & Graphical Software