功能主要两块：一是分割工具条；二是控件随窗口变化而变化；另外界面比较美观，实现了并排停靠的功能。-The main two functions: First, partition toolbar control are two changes with the window another relatively attractive interface, a parallel implementation of the function call.

实现了分割条的绘制，实现了单文档中的多窗口显示，扩展了程序功能。-To achieve the segmentation of the drawing，To achieve a single document in the multi-window display，Extends the program features。