一个directshow的render filter，使用directdraw，支持多显示器多显卡，另调用这个filter的播放器-a directshow render filter with directdraw, support multi-monitors and mulit-adapters. furthermore provide a multimedia player which uses the filter.

DirectDraw+DirectShow开发的视频播放程序,可以直接运行。-DirectDraw+ DirectShow development of the video player can be run directly.