多线程程序的编写，多线程应用中容易出现的问题。互斥对象的讲解，如何使用互斥对象来实现多线程的同步。如何利用命名互斥对象保证应用程序只有一个实例运行。应用多线程编写网络聊天室程序。-The writing of the multi-thread programming, multi-threaded applications to the problem. The sense of the mutex object, and how to use the mutex object to realize the multi-thread synchronization. How to use named mutex object ensure application is only one instance operation. Write multithreaded application network chat program.