***急急急*** Flex中如何实现橡皮擦功能--给200分

[LuckyJan]

我在Flex中实现UIComponent涂鸦，如何实现Flex中如何实现橡皮擦功能？
<s:BorderContainer id="myPanel" width="100%" height="100%" />
<fx:Script>
<![CDATA[
private var UIC:UIComponent;
private function init():void
{
myPanel.addEventListener(MouseEvent.MOUSE_DOWN, downHandler);
myPanel.addEventListener(MouseEvent.MOUSE_MOVE, moveHandler);
myPanel.addEventListener(MouseEvent.MOUSE_UP, upHandler);
}

private function downHandler(e:MouseEvent):void
{
IsDown=true;
mX=myPanel.mouseX;
mY=myPanel.mouseY;
UIC = new UIComponent();
myPanel.addElement(UIC);
}
private function upHandler(event:MouseEvent):void
{
IsDown=false;
}

private function moveHandler(event:MouseEvent):void
{
if (IsDown)
{
UIC.graphics.lineStyle(_lineSize, _lineColor, 1);
UIC.graphics.moveTo(mX, mY);
UIC.graphics.lineTo(endX, endY);
mX=endX;
mY=endY;
}
}
]]>
</fx:Script>

[LuckyJan]

(1)remove UIC 把整个UIC 去掉了吧？这个相当于“撤销”，不是橡皮擦啊？？？ （2）我是不是理解错误了，请给代码

[LuckyJan]

补充：另外100分结贴后，给100散分帖

[weiyia]

myPanel.addElement(UIC) 你这种添加 可以用UIC.addEventListener 添加事件监听remove UIC不就等于橡皮擦了

[LuckyJan]

不会啊，有哪位大虾给给代码？？