开发中经常碰到如何把视图划分成多个区域，该程序可以动态的划分单文档视图，-development often encountered View how divided into several zones, the program can be divided into dynamic single document View,

pb实现的拖拽条功能，可以将窗口分成若干个区域，通过拖拽中间的分割条，来缩放各个区域的尺寸！-pb achieve drag strip function, the window can be divided into several zones, split by dragging the middle of the strip, to scale the size of each region!