LogOpenEventNotification parameter packet.

typedef struct _LOENREQUEST {
  ULONG            packet_size;
  ULONG            packet_revision_number;
  ULONG            log_file_ID;
  ULONG            read_flags;
  PULONG           pLogNotify;
  PFILTERBLOCK     pFilter;
} LOENREQUEST;

typedef   LOENREQUEST   * PLOENREQUEST ;