Sets file information.

#define INCL_DOSFILEMGR
#include <os2.h>

HFILE     hf;           /*  File handle. */
ULONG     ulInfoLevel;  /*  Level of file information being set. */
PVOID     pInfoBuf;     /*  Address of the storage area containing the structures for file information levels. */
ULONG     cbInfoBuf;    /*  The length, in bytes, of pInfoBuf. */
APIRET    ulrc;         /*  Return Code. */

ulrc = DosSetFileInfo(hf, ulInfoLevel, pInfoBuf,
         cbInfoBuf);