摘要： 对Windows操作系统下屏幕获取的方法进行了探讨，根据不同的计算机性能和不同的屏幕教学内容，提出了3种获取屏幕信息的方法，使用户可以利用更少的计算机资源、网络带宽，更快、更稳定地获取教师机的屏幕信息，在远端获取平滑、流畅的图像。

关键词: Visual C++, DirectX, DMA, 挂钩, 协议

Abstract: This paper discusses how to capture the screen under Windows OS and gives an effective method of getting the screen according to different computer and different content,through this method,the remote people can get smooth picture and the teacher's computer screen more quickly with limited computer and network resource.

中图分类号: 

• G433