动态链接库程序的编写。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。如何利用工具查看动态链接库输出的函数，Depends工具的使用，C++编译器名字改编技术对动态链接库输出函数的影响，extern "C"的用法，利用模块定义文件来解决C++名字改编的问题。用typedef定义指向函数的指针类型，如何获得动态连接库里的函数的指针。-Dynamic link library preparation process. Static library and dynamic library distinction, and call procedures in the static library and dynamic link library when the distinction. How to use tool to view a dynamic link library function of the output, Depends tools, C++ Compiler technology to adapt the name of a dynamic link library function of the impact of the output, extern　C　usage, use module definition files to resolve the C+ 2B ! the name of adaptation. Typedef point to use the definition of function pointer type, how to obtain the dynamic link library function pointer.