FILTERBLOCK

Filter block structure.

typedef struct _FILTERBLOCK {
  ULONG            packet_size;
  ULONG            packet_revision_number;
  PHEADERBLOCK     header_block;
} FILTERBLOCK;

typedef   FILTERBLOCK   * PFILTERBLOCK ;

Use   appropriate   packet _ revision _ number   to   indicate   whether   character
data   in   the   parameter   packet   is   in   UniCode   or   ASCII   format .