可以通过Slider控件控制绘图颜色在右侧显示，可以通过ListBox控制填充样式，和虚线,Slider controls can control the color graphics on the right, it can be filled through the ListBox control style, and the dotted line

列表控件的实现，可以实现简单的列表功能，有滑动条-The realization of the list control can be achieved simply a list of features, there are slider