The DDDEVICEIDENTIFIER2 structure is defined as :-

struct DDDEVICEIDENTIFIER2 {
char szDriver[MAX_DDDEVICEID_STRING];
char szDescription[MAX_DDDEVICEID_STRING];
LARGE_INTEGER liDriverVersion;
DWORD dwVendorId;
DWORD dwDeviceId;
DWORD dwSubSysId;
DWORD dwRevision;
GUID guidDeviceIdentifier;
DWORD dwWHQLLevel;
};