TinyXML (both TinyXML and TinyXML-2) primarily deals with narrow character strings (std::string). However, if you want to work with Unicode strings (std::wstring), you need to convert between std::wstring and std::string (typically using UTF-8 encoding). Steps to handle Unicode (std::wstring) with TinyXML: Convert std::wstring to std::string (UTF-8) before inserting into TinyXML. Convert std::string (UTF-8) back to std::wstring when reading from TinyXML. Implementation: Dependencies: Use <codecvt>...