文章主要讨论了视频会议系统中基于 电子白板的图形会话系统的通讯机制, 以及采用W inSock 技术实现系统的主要技术和编程方法-Th is paper int ro2 duces the communicat ion mechanism of graph system based on w h iteboard, and discusses the im2 p lementat ion w ith w indow s socket.

在C语言中包含一个头文件UbigraphAPI.h，便可以像往常一样用循环语句“画”一个环，展示出图论模型的三维结构（需下载Ubigraph软件）-Contains a header file UbigraphAPI.h in the C language can be as usual loop " paint" a ring, demonstrating the three-dimensional structure of the graph theory model (s