Performs multiple locking, unlocking, seeking, and I/O operations against one or more files.
#define INCL_DOSFILEMGR
#include <os2.h>
ULONG ulCmdMode; /* Command mode */
ULONG ulNumEntries; /* Number of LISTIO entries to process */
PLISTIO pListIO; /* Pointer to array of LISTIO structures */
APIRET ulrc; /* Return Code. */
ulrc = DosListIO(ulCmdMode, ulNumEntries,
pListIO);