内含4个程序的源代码，代码是根据Microsoft C++程序设计指南敲进去的，很容易看懂，适合初学者使用，对于了解MFC的常用框架有很大帮助-Includes four program' s source code, the code is based on Microsoft C++ Programming Guide knock into, and is easy to understand for beginners to use, a common fr a mework for