一个很有用的开源的FLEX类库，里面有很多使用的组件，而且效果也很好，像WindowShade，TreeGrid，SuperTabNavigator，DragCanvas等。可以直接在flex中导入使用-A very useful source of FLEX library, there are many components to use, but also very effective, like WindowShade, TreeGrid, SuperTabNavigator, Drag