flex tree 自动显示横向滚动条
mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:cmp="com.render.*"
height="100%" width="100%" paddingTop="0" paddingBottom="0" paddingLeft="0" paddingRight="0">
<cmp:AutoSizeTree
id="checkTree"
itemRenderer="com.render.CheckTreeRenderer"
change="updataDataGrid()"
labelField="@label"
width="100%" height="100%"
horizontalScrollPolicy="auto" >
</cmp:AutoSizeTree>
</mx:Application>
actionscript
package com.render
{
import flash.events.Event;
import mx.controls.Alert;
import mx.controls.Tree;
import mx.core.ScrollPolicy;
import mx.core.mx_internal;
public class AutoSizeTree extends Tree
{
public function AutoSizeTree()
{
super();
horizontalScrollPolicy = ScrollPolicy.AUTO;
}
override public function get maxHorizontalScrollPosition():Number
{
if (isNaN(mx_internal::_maxHorizontalScrollPo
相关文档：
1.复制内容到系统剪贴板
System.setClipboard(strContent);
2.复制一个ArrayCollection
//dummy solution( well, it works )
var bar:ArrayCollection = new ArrayCollection();
for each ( var i:Object in ac ){
bar.addItem( ......
原文：http://www.riameeting.com/node/587
里面有一句总结性的话:
设置一个对象为null不一定能够释放它占用的内存”。这取决于flash中已经实现的垃圾回收的方式，GC由重分配触发而不是由删除触发，这意味着GC周期在你声明new Object()的时候运行而不是你设置它为null时运行。
也就是说在new 对象时才重新分配内存� ......
Flex拖拽-List内部拖拽
关键字: flex, flex拖拽, list
<?xml version="1.0" encoding="utf-8"?>
<mx:WindowedApplication xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="creationHandler();">
<mx:Script>
<
