介绍listbox控件的基本用法，包括增加字符串，自动刷新，显示最新添加进去的字符串。-Introduction Basic Usage listbox control, including the increase in string automatically refresh, showing the latest added to the string.

列表框滚动更新，做显示用,可以自动刷新界面(Listbox rolling updata,for show the data,It can flash the screen automaticly)