用DirectShow写的avi视频播放器，其实不止能播放avi，还能播放其他的视频格式，能实现截图等功能，在visual c++下编译通过，不过要先安装DirectShow，然后配置。-A avi video player writen by DirectShow, in fact, not only can play avi, also can play other video formats, the player can grab the screen and save the pho