一组FLEX的界面控件,可以方便的完成一些界面功能,如mdi window,image 64-The interface controls a group of FLEX, you can easily complete the number of interface features, such as the mdi window, image 64

Penal实现MDI窗口,最大化,最小化,关闭-Penal achieve MDI windows, maximize, minimize, close