DosPFSVerifyFont

#define INCL_DOSPFS

USHORT  rc = DosPFSVerifyFont(PrinterName, CodePage, FontID, Reserved);

PSZ              PrinterName;   /* Printer name string */
USHORT           CodePage;      /* Code Page to validate */
USHORT           FontID;        /* Font Id to validate */
ULONG            0;             /* Reserved, set to zero */

USHORT           rc;            /* return code */