Flex DataGrid 可编辑 控制输入值的长度——maxchars

使用itemRenderer自定义，利用TextInput的maxchars。

代码如下：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" initialize="init()">
	<mx:Script>
		<!--[CDATA[
		   	import mx.collections.*;
			import mx.events.CollectionEvent;
			
			private var DGArray:Array = [
          	{Artist:'Pavement', Album:'Slanted and Enchanted', Price:11.99},
          	{Artist:'Hotdog', Album:'Brighten the Corners', Price:21.99}];
         
       		[Bindable]
       		public var initDG:ArrayCollection;
       	
       		public function init():void {
          		initDG=new ArrayCollection(DGArray);
       		}
		]]-->
	</mx:Script>
	
	<mx:DataGrid id="giftList" height="100" width="100%" dataProvider="{initDG}" >
   		<mx:columns>
    		<mx:DataGridColumn dataField="Artist" />
    		<mx:DataGridColumn dataField="Album" >
     			<mx:itemRenderer>
      				<mx:Component>
       					<mx:HBox>
        					<mx:TextInput id="amount" text="{data.Album}" width="190" maxChars="10"/>
       					</mx:HBox>
           			</mx:Component>
       			</mx:itemRenderer>
    		</mx:DataGridColumn>
    		<mx:DataGridColumn dataField="Price" />
   		</mx:columns>
  	</mx:DataGrid> 
</mx:Application>