实现仿照桌面多个物体的三维显示，生成的图像比较精美。

在桌面左上角画一小段圆弧，绘图很简单，主要演示如何在桌面显示-draw an arc on the desktop in C#

简易模拟时钟，使用MATLAB的GUI开发而成，可以获取桌面时钟数然后在模拟钟面上显示，每隔一秒刷新显示！-Simple analog clock, a GUI was developed using MATLAB, you can get a desktop clocks and analog clock face on display, refresh the display every second!