用VC++写的一个基于对话框的简单的画图程序，对于初学网络编程+画图的人很有帮助，不过得有一个服务端进行连接。服务端的作用主要是产生数据-With VC++ Write a dialog based on a simple drawing program for the novice network programming+ Draw people very helpful, but must have a service client to connect. The role of clien