windows utf8 转 utf16

static int MdesUtf8ToUtf16 (  const char* src, wchar_t * dst ){#ifdef _MSC_VER    int size = MultiByteToWideChar ( CP_UTF8, 0, src, -1, dst, 0 );    return MultiByteToWideChar ( CP_UTF8, 0, src, -1, dst, size + 1 );#else    dst[0] = 0;    return 0;#endif}

//the most max file path 512static int my_open_utf8 (const char* device/*utf8 char*/, int flag){#ifdef _MSC_VER    wchar_t wFileName[512];    MdesUtf8ToUtf16 ( device, wFileName );    return _wopen ( wFileName, flag, 0 );#endif}