Flex spark application container disable scroll bars

First question, do I have to necessarily have a application container as the root node in my mxml file? Second, I was reading this document on adobe's website and it says that the spark application container has no scroll bars by default and they can be added by using a custom skin. (Look at the table comparing the mx and spark appl开发者_运维百科ication containers). But my problem is that my application container already has scroll bars by default and I want to get rid of them. I have a main application container with a custom child component that already has scroll bars. I just want the child to have the scroll bars and not the main application. Right now I get 2 scroll bars nested within each other.

Yes I have resolved this problem. I have taken one MX component("Canvas") at outer of flex4 Application component and find out scroll bar enable at application label.

I realized that the problem was being caused by having a horizontal slider in my control bar. If I remove the slider from the control bar the container works as expected that means no scroll bars. To solve the problem with having a slider in the scroll bar just put it inside a Hbox / Vbox. (doesn't matter as slider is the only content I put in there) and then disable the horizontal and vertical scroll bar policy on the enclosing box. Enclosing the slider in a box container magically solves the problem.