该示例应用程序演示了一些图形技术，这些技术是在《程序员指南》的“创建应用程序图形”中介绍的。该示例中使用的控件包括 Image、Line、PictureBox、Shape 和 Timer。-The sample application demonstrates a number of graphics technologies that are in the " Programmer' s Guide"　and " create a graphical application"　described. The sample used in the control, including Image, Line, PictureBox, Shape, and Timer.