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 .