VC++通过内存映射在程序间交换数据，通过这个小实例，你会了解到以下技巧：在内存映像中创建对象，将文件视图映射到一个进程的地址空间上、返回LPVOID类型的内存指针、给映像内存数据赋给本地变量、释放映像内存、更新数据等。

-VC++ through the memory mapping between programs exchange data through this small example, you will learn the following skills: in the memory image to create the object file view is mapped to a process' s address space, return LPVOID types of memory pointer to the image memory data assigned to local variables, the release of the image memory, updated data.