Function SetupDiGetClassDevsExW

pub unsafe extern "system" fn SetupDiGetClassDevsExW(
    ClassGuid: *const GUID,
    Enumerator: PCWSTR,
    hwndParent: HWND,
    Flags: DWORD,
    DeviceInfoSet: HDEVINFO,
    MachineName: PCWSTR,
    Reserved: PVOID,
) -> HDEVINFO