学校的课程设计作业，一个简单的网络聊天室。分为客户端和服务器端，客户端向服务器发送消息到服务器端再有服务器端广播给所有的客户端以实现聊天室功能。用mfc和socket的简单应用。-School curriculum design work, a simple online chat room. Divided into client and server, the client sends the server a message to the server and then have the