如何为tree设置图标代码示例

[Embed(source="org/sotower/bpm/webservice/client/view/assets/webservice.gif")]

[Bindable]

public var webserviceIcon:Class;

 

[Embed(source="org/assets/operation.gif")]

[Bindable]

public var operationIcon:Class;

 

[Embed(source="org/assets/request.gif")]

[Bindable]

public var requestIcon:Class;

 

public function iconFun(item:Object):*{

var node:XML=XML(item);

if(node.localName()=="webservice"){

return webserviceIcon;

}

if(node.localName()=="method"){

return operationIcon;

}

return requestIcon;

 

}

<mx:Tree id="tree" labelFunction="labelfun" 

iconFunction="iconFun"

width="100%" height="100%" x="0" y="0"/>