Convert XLS To SPREADSHEETML Online for Free. Free Online XLS To SPREADSHEETML Converter. C++ XLS To SPREADSHEETML. XLS To SPREADSHEETML via C++....OTT XPS PNG BMP EMF GIF SVG TIFF JPG intrusive_ptr<Aspose::Cells::IWorkbook>...Cells for C++ DLL in your project. Other Supported Conversions...