如何在c++中使用fprintf编写UTF-8文件?

I am programming (just occassionally) in C++ with VisualStudio and MFC. I write a file with fopen and fprintf. The file should be encoded in UTF8. Is there any possibility to do this? Whatever I try, the file is either double byte unicode or ISO-8859-2 (latin2) encoded.I am programming (just occassionally) in C++ wi