这是一个很好的学习TCP的案例，其中包括了使用套接字进行底层通讯的完整流程，供大家参考-This is a very good case study of the TCP, These include the use of socket in the bottom of the integrity of communication flow, for your reference

北大青鸟s1-myqq项目案例,包括数据库的连接和各个窗体的设计代码完整，功能齐全1-Beida Jade Bird s1-myqq project case, including database connectivity and the various forms of design code complete, fully functional 1

这是一个典型的网络聊天系统的设计和开发案例，完整地体现了一个网络应用系统的对象定义、对象建模和模型转换为编码的基本开发流程。-This is a typical online chat system design and development case, a complete embodiment of a network application system for object definition, object modeling and model transformation for