**Flex**UIComponent如果转换为ByteArray？

[LuckyJan]

private var UIC:UIComponent=null;
private function drawLine(endX:Number,endY:Number):void
{
UIC.graphics.clear();
UIC.graphics.lineStyle(_lineSize, _lineColor, 1);
UIC.graphics.moveTo(mX, mY); //
UIC.graphics.lineTo(endX, endY); //涂鸦，画曲线
mX=endX;
mY=endY;
}

private function saveAs():void
{
var en:PNGEncoder =new PNGEncoder();
//下面语句：ArgumentError: Error #2015: 无效的 BitmapData。
var ba:ByteArray=en.encode(ImageSnapshot.captureBitmapData(UIC));//*** 出错 ***
ws.saveImage(ba); //webservice 保存数据流
}

[LuckyJan]

没人回复吗？

[LuckyJan]

<mx:Image id="myPanel" /> //private var myPanel:Image; private var UIC:UIComponent=null; ... myPanel.addEventListener(MouseEvent.MOUSE_DOWN, downHandler); public function downHandler(e:MouseEvent):void { UIC = new UIComponent(); myPanel.addChild(UIC); } .... .... var en:PNGEncoder =new PNGEncoder(); var ba:ByteArray=en.encode(ImageSnapshot.captureBitmapData(myPanel)); ws.saveImageObj("add",ba); //保存byte[]到数据库

[zhansonlon]

此贴，乃是神贴，元芳你怎么看？