即时聊天系统，一个老外的源代码，代码风格比较严谨，简洁。功能实现也很完善，能够即时聊天，有数据库，可以用VS2008 调试，是学习即时聊天的好源代码-Instant messaging system, a foreigner s source code, code style of rigorous, concise. Function realization is also improved, to instant messaging, a database, you can use VS20