如何在此列表之外显示列表项？

Question

这是我的代码：

    <s:List id="myList"  itemRenderer="myItemRenderer" contentBackgroundAlpha="0.5" contentBackgroundColor="red"  labelField="firstName"
        >
    <s:layout>
        <s:BasicLayout clipAndEnableScrolling="false" />
    </s:layout>
    <s:dataProvider>
        <s:ArrayCollection>
            <fx:Object firstName="Bill" lastName="Smith" companyID="-15" />
            <fx:Object firstName="Dave" lastName="Jones" companyID="-30" />
            <fx:Object firstName="Mary" lastName="Davis" companyID="-45" />
            <fx:Object firstName="Debbie" lastName="Cooper" companyID="-60" />
        </s:ArrayCollection>
    </s:dataProvider>
</s:List>

并且itemrederer是：

    <?xml version="1.0" encoding="utf-8"?>
<s:ItemRenderer xmlns:fx="http://ns.adobe.com/mxml/2009"
                xmlns:s="library://ns.adobe.com/flex/spark"
                implements="mx.managers.IFocusManagerComponent" autoDrawBackground="false"

                >

    <s:BitmapImage width="32" height="32" source="aa.jpg" />
    <s:Label text="{data.lastName}"  />
</s:ItemRenderer>

我想在其外的列表中显示标签，我使用此clipAndEnableScrolling="false"但没有用，

所以我该怎么做，

感谢