DrawCircle

从一个mpeg4视频文件中，抓取给定起始结束时间段内的图像，保存为jpeg格式，使用directshow实现(From a mpeg4 video file, the crawl a given time period starting the end of the image, save it as a jpeg format, the use of DirectShow realize)

说明：  北京大学ACM竞赛试题集锦，希望对你的编程能力因为它而更上一层楼，它的算法设计方面很有帮助对你(Beijing University ACM Collection questions, and I hope to your programming capability because it is being, it's helpful in the design of algorithms to you)

大名鼎鼎的mad播放程序，本人做了一些修改，使之更优秀(Mad famous player, I make some modifications to make it better)

mfc下操作excel，可以实现创建，打开，读写数据的功能(use excel under mfc platform)

对MTD雷达中进行杂波滤除的滤滤波器组，就是多普勒滤波器组的仿真 (MTD radar clutter filter filter filter bank, is the simulation of the Doppler filter)

基于CS模式的聊天软件，具有加密功能，服务器端得数据库操作自己实现。(base on CS model chat tool)

说明：  C sharp程式. 可自動排列撲克牌順序,並比大小.(C sharp code. Can be automatically arranged in order of playing cards, and more than size.)

仿Win7半透明窗口效果,vc++实现,使用的是分层窗口的方法,用算法实现阴影效果(Imitation Win7 translucent window effect vc++ to achieve using a layered window algorithm to achieve the shadow effect)

透過GUI編輯 轉換成mail發送支援base64(Through the GUI editor into mail to send support base64)

c++ 操作符重载示例，实现复数的相加运算和赋值(c operator overloading example, the realization of complex arithmetic calculations and the sum of assignment)