LCEFREQUEST

LogChangeEventFilter parameter packet.  typedef struct _LCEFREQUEST { ULONG           packet_size; ULONG           packet_revision_number; ULONG           purge_flags; ULONG           LogNotify; PFILTERBLOCK    pFilter; } LCEFREQUEST;

typedef  LCEFREQUEST   * PLCEFREQUEST ; 

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