Gets file information.

#define INCL_DOSFILEMGR
#include <os2.h>

HFILE     hf;                  /*  File handle. */
ULONG     ulInfoLevel;         /*  Level of file information required. */
PVOID     pInfo;               /*  Address of the storage area where the system returns the requested level of file information. */
ULONG     cbInfoBuf;           /*  The length, in bytes, of pInfo. */
FHLOCK    fhFileHandleLockID;  /*  The filehandle lockid returned by a previous DosProtectOpen. */
APIRET    ulrc;                /*  Return Code. */

ulrc = DosProtectQueryFileInfo(hf, ulInfoLevel,
         pInfo, cbInfoBuf, fhFileHandleLockID);