基本实现C++ 解析eml格式邮件，调用msado15.dll方式。(The basic realization of C++ parsing, EML format mail, call the msado15.dll mode.)

C C++封装实现邮件 eml的解析 能够详细解析eml文件头等信息(The parsing of mail EML in the C C++ package can analyze the first class information of the EML file in detail)