MFC代码，用于计算校验码。主要的功能是向初学者提供MFC中消息映射的实用以及字符串处理的过程。用vs2010开发，且使用静态编译，编译结果可以脱离MFC的框架库运行。-MFC code, used to calculate the checksum. The main function is to provide practical and string handling process in the MFC message map to beginners. With vs2010 deve

静态库与动态库的区别,以及调用程序在链接静态库和动态库时的区别(The difference between the static library and dynamic library, as well as the caller when link static library and dynamic library differences)