多线程聊天程序，多线程应用中容易出现的问题。互斥对象的讲解，如何采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。-Write multi-threaded programs, multi-threaded applications prone to problems. Mutex object' s explain how to use multi-threaded mutex object to achieve synchronization. How to use named mutex object to ensure only one instance of the application to run. Application of multi-threaded web chat program written.