astra as3 panel layout

I'm trying to create a layout not too different from the feed reader sample.

The problem I'm having is that I'm finding the documentation unclear. There are so many different types of layouts that I don't know which one to use when.

In the example, on the right side there are a few horizontal panels:

• [feedToolbar(HboxPane)]
• [feedItemsGrid(Datagrid)]
• [filterToolbar(HBox)]

this does not include the details panel and the resize handle.

I would like to swap the DataGrid with my custom content which is basically a sprite. The problem I have is that I cannot just include a sprite, because it does some开发者_JS百科 funky resizing. I would like the scroll bar to appear when the content is too tall, and have have the same skin for the background as the DataGrid.

shortly after posting...

I've tried BaseScrollPane, a class that DataGrid extends, but I couldn't use addChild. I came across FlowPane, seems like it did the trick.