这是一个画正弦曲线和余弦曲线控制图，请大家自己去运行一下，还比较好的。-This is a painting sine and cosine curve curve control chart, we all go running about, but also quite good.

托盘控制图元，可以控制图元的显示与隐藏，经过测试-Tray control charts can control the display element and hide, tested