The data operation structure (rxDATOP) is passed to data operation callbacks:
typedef struct _rxdatop {
pctCHGB pchgbuf; /* [IN] Data operation details */
pctFILH pfilhnd; /* [IN] File information */
} rxDATOP, *prxDATOP;
Input: Data operation details for this event - Includes log position, file ID, unique key, record image; the callback can change the key value and record image.
