The following example shows how you can use a Tree control as a PopUpButton control’s pop up in Flex
<?
xml version="1.0" encoding="utf-8"
?>
<!-- http://blog.flexexamples.com/2008/02/26/displaying-a-tree-control-as-a-pop-up-for-a-flex-popupbutton-control/ -->
< mx:Application xmlns:mx ="http://www.adobe.com/2006/mxml"
layout ="vertical"
verticalAlign ="middle"
backgroundColor ="white" >
< mx:Style >
Tree {
textAlign: left;
fontWeight: normal;
}
</ mx:Style >
< mx:XML id ="mlb" source ="mlb.xml" />
< mx:ApplicationControlBar dock ="true" >
< mx:PopUpButton label ="Please select a team
"
>
< mx:popUp >
< mx:Tree id ="tree"
dataProvider ="{mlb}"
labelField ="@label"
showRoot ="false"
width ="200"
rowCount ="8" />
</ mx:popUp >
</ mx:PopUpButton >
</ mx:ApplicationControlBar >
</ mx:Application >
<!-- http://blog.flexexamples.com/2008/02/26/displaying-a-tree-control-as-a-pop-up-for-a-flex-popupbutton-control/ -->
< mx:Application xmlns:mx ="http://www.adobe.com/2006/mxml"
layout ="vertical"
verticalAlign ="middle"
backgroundColor ="white" >
< mx:Style >
Tree {
textAlign: left;
fontWeight: normal;
}
</ mx:Style >
< mx:XML id ="mlb" source ="mlb.xml" />
< mx:ApplicationControlBar dock ="true" >
< mx:PopUpButton label ="Please select a team
"
>
< mx:popUp >
< mx:Tree id ="tree"
dataProvider ="{mlb}"
labelField ="@label"
showRoot ="false"
width ="200"
rowCount ="8" />
</ mx:popUp >
</ mx:PopUpButton >
</ mx:ApplicationControlBar >
</ mx:Application >
本文转自 OldHawk 博客园博客，原文链接：http://www.cnblogs.com/taobataoma/archive/2008/02/28/1085128.html，如需转载请自行联系原作者
