How to list UTF encoded filenames in a given directory in CPP?

Question

I'm trying to get all the files in a given directory, under Windows 10, using a CMake based CPP project (VS compiler). I can't use boost or other libs. I'm using the following function

        string search_path = "D:\\*.*";
        WIN32_FIND_DATA fd;
        HANDLE hFind = ::FindFirstFile(search_path.c_str(), &fd);
        if(hFind != INVALID_HANDLE_VALUE)
        {
            do {
                // read all (real) files in current folder
                // , delete '!' read other 2 default folder . and ..
                if(! (fd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) )
                {
                    printf("%s - ", fd.cFileName);
                    
                    for (int i = 0; i < 30; ++i)
                    {
                        printf("%02x", fd.cFileName[i]);
                    }
                    printf("\n");
                }
            } while(::FindNextFile(hFind, &fd));
            ::FindClose(hFind);
        }

It works fine for ASCII filenames, but an arabic file shows up as

???? ???? ?????.jpg - 3f3f3f3f203f3f3f3f203f3f3f3f3f2e6a706700746d6c0000696e646f77

I welcome any kind of pointer.

Answer 1

If you have c++17 you could also try with standard library solution

for(auto& p: std::filesystem::directory_iterator("D:\\")) {
  std::wstring file_name = p.wstring();
}