本程序的核心思路是调整控件的位置和显示/隐藏控件，当一个面板被收起或展开时，只要把它下面的控件都隐藏或显示出来，再调整各面板控件位置，这样整个面板组就像百叶窗一样可以收放自如了。 -The core idea of this program is to adjust the position of the control and display/hide the controls, when a panel is put away, or expanded, as long as it co