Flex 画线的方法

public var lines1 :flash.display.Sprite = new Sprite (); //

lines1.graphics.lineStyle(2,0x0099ff,1);//设置颜色 粗细

lines1.graphics.moveTo(uFrom.x+uFrom.width/2,uFrom.y+uFrom.height/2); //从某个坐标开始

lines1.graphics.lineTo(uTo.x+uTo.width/2,uTo.y+uTo.height/2); //画到某个坐标

//因为addChild方法 不能识别 非继承mc.core.UIComponent的控件  所以先声明一个组件 把控件放进去然后在放进界面中

var comp: UIComponent = new UIComponent();

comp.addChild(lines);

addChild(comp);再flex 3 IDE Flex Builder 3 beta 3下编译通过

<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" borderColor="#FFFFFF" ><mx:Script><![CDATA[            import mx.effects.Move;            import mx.controls.*;            import mx.core.*;            import mx.effects.*;            public var lines :Sprite =  new Sprite ();            public var lines1 :flash.display.Sprite =  new Sprite ();            public function TestPaint():void            {                //Alert.show("Hello World!");                lines.graphics.lineStyle(2,0x0099ff,1);                DrawLine(lines,lbl,btn1);                DrawLine(lines,lbl,btn2);                DrawLine(lines,lbl,btn3);                   var comp: UIComponent = new UIComponent();                   comp.addChild(lines);                   addChild(comp);            }            public function DrawLine(lines:Sprite,uFrom:UIComponent,uTo:UIComponent):void            {                lines.graphics.moveTo(uFrom.x+uFrom.width/2,uFrom.y+uFrom.height/2);                lines.graphics.lineTo(uTo.x+uTo.width/2,uTo.y+uTo.height/2);            }            public function btn1_mouseOver(event:Event):void            {                lines1.graphics.lineStyle(2,0xd43dd6,1);                DrawLine(lines1,btn1,btn2);                DrawLine(lines1,btn1,lbl);                   var comp: UIComponent = new UIComponent();                   comp.addChild(lines1);                   addChild(comp);            }            public function btn1_mouseOut(event:Event):void            {                lines1.graphics.clear();                DrawLine(lines,lbl,btn1);            }            public function Testmove():void            {                var move:Move = new Move();                if(btn2.x!=lbl.x)                {                    move.target=btn2;                    move.end();                    move.xTo=lbl.x;                    move.yTo=lbl.y;                    move.play();                 }                else                {                    move.target=btn2;                    move.end();                    move.xTo=340;                    move.yTo=104;                    move.play();                 }            }]]></mx:Script><mx:Button x="176" y="34" label="btn1" id="btn1" mouseOver="btn1_mouseOver(event)" mouseOut="btn1_mouseOut(event)"/><mx:Button x="340" y="104" label="btn4" id="btn2"/><mx:Button x="53" y="167" label="btn3" id="btn3"/><mx:Button x="131" y="373" label="Paint" click="TestPaint()"/><mx:Label x="176" y="169" text="LblMiddle" width="71" height="20" id="lbl"/><mx:Button x="303" y="324" label="Move" click="Testmove()"/></mx:Application>

相关资源：Flex画线，两点之间画线功能