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。-Procedures for the preparation of multi-threaded, multi-threaded applications easily arise. Mutex object to explain, how to use the mutex object to realize multi-thread synchronization. How to use named mutex object to ensure that applications run only one instance. Application of multi-threaded chat room procedures for the preparation of the network.