1.通过窗口之前的和改变后的状态信息，计算出窗口新的布局情况。

2.定义:总窗口有三个子窗口；窗口布局分为6种模式（Mode）；

3.窗口的变化有：关闭子窗口，拖拽窗口，锁定窗口；

4.窗口的信息有：是否锁定（Locked），大小形状（Shap），属于的模式（Mode），总窗口大小（Size）；

-1. Through the window before and after the change of state information to calculate the layout of the new window. 2. Definition: The total window has three sub-window　window layout is divided into six kinds of patterns (Mode)　3. Change the window there is: turn off sub-window, drag the window, lock the window　4. The information window there is: Is it locked (Locked ), size, shape (Shap), belong to the mode (Mode), the total window size (Size)