public static extern int SetupDiEnumDeviceInterfaces(IntPtr deviceInfoSet, IntPtr deviceInfoData, ref Guid interfaceClassGuid, int memberIndex, ref SPDeviceInterfaceData deviceInterfaceData);
public static extern int SetupDiGetDeviceInterfaceDetail(IntPtr deviceInfoSet, ref SPDeviceInterfaceData deviceInterfaceData, IntPtr deviceInterfaceDetailData, int deviceInterfaceDetailDataSize, ref int requiredSize, IntPtr deviceInfoData);