在AS3中没有触发Mouse_down事件

Question

我写了一些代码，是AS3。我的目标是点击MainTimeline阶段并在功能runDraw()内运行trace()。目前，MOUSE_DOWN事件永远不会被触发，我无法弄清楚。

代码更新：

package circles 
{ 
    import flash.display.Sprite; 
    import flash.events.*; 
    import flash.geom.Point; 
    import flash.display.DisplayObjectContainer; 
    import flash.display.MovieClip; 

    public class Circles extends Sprite 
    { 
     var circCentre:Sprite = new Sprite(); 
     var circOuter:Sprite = new Sprite(); 
     var point:Sprite = new Sprite(); 

     trace("Class stuff initilized"); 

     function Circles():void 
     { 
      this.addEventListener(MouseEvent.MOUSE_DOWN, runDraw); 
      trace("Constructor done"); 
     } 

     function runDraw(e:MouseEvent):void 
     { 
      trace("runDraw(e)"); 
      // centre circle draw and add to timeline 
      circCentre.graphics.lineStyle(3, 0x000000); 
      circCentre.graphics.beginFill(0xFF6600); 
      circCentre.x = e.stageX; 
      circCentre.y = e.stageY; 
      circCentre.graphics.drawCircle(e.stageX, e.stageY, 100); 
      circCentre.graphics.endFill(); 
      this.addChild(circCentre); 
      trace("mc.addChild(circCentre)"); 

      // smaller outer circle 
      circCentre.addChild(circOuter); 
      // attach to parent; 
      circOuter.graphics.lineStyle(1, 0xDD2211); 
      circOuter.graphics.beginFill(0x66FF00); 
      circOuter.x = 200; 
      circOuter.y = e.stageY; 
      circOuter.graphics.drawCircle(200, e.stageY, 50); 
      circOuter.graphics.endFill(); 

      // the draw point; 
      circOuter.addChild(point); 
      point.graphics.moveTo(5, 0); 
      point.graphics.lineTo(5, 10); 
      point.graphics.moveTo(0, 5); 
      point.graphics.lineTo(10, 5); 
      point.x = 50; 
      point.y = 90; 
      stage.addEventListener(Event.ENTER_FRAME, rotationDraw); 
      stage.addEventListener(MouseEvent.MOUSE_UP, finish); 
     } 

     public function rotationDraw(e:Event):void 
     { 
      circCentre.rotation++; 
      circOuter.rotation++; 
     } 

     public function finish(e:MouseEvent):void 
     { 
      stage.removeEventListener(Event.ENTER_FRAME, rotationDraw); 
     } 
    } 
} 

非常感谢。

Answer 1

以下工作（我修改了你的班级代码）。

时间轴

var c:Circles = new Circles(stage); 
addChild(c); 

类文件

// removed package name for testing 
package 
{ 
    import flash.display.Sprite; 
    import flash.display.Stage; 
    import flash.events.*; 
    import flash.geom.Point; 
    import flash.display.DisplayObjectContainer; 
    import flash.display.MovieClip; 

    public class Circles extends Sprite 
    { 
     var circCentre:Sprite = new Sprite(); 
     var circOuter:Sprite = new Sprite(); 
     var point:Sprite = new Sprite(); 

     var _stage:Stage; 

     // shouldn't really have trace statements out here 
     trace("Class stuff initilized"); 

     function Circles(stage:Stage):void 
     { 
      _stage = stage; 

      _stage.addEventListener(MouseEvent.MOUSE_DOWN, runDraw); 
      trace("Constructor done"); 
     } 

     function runDraw(e:MouseEvent):void 
     { 
      trace("runDraw(e)"); 
      // centre circle draw and add to timeline 
      circCentre.graphics.lineStyle(3, 0x000000); 
      circCentre.graphics.beginFill(0xFF6600); 
      circCentre.x = e.stageX; 
      circCentre.y = e.stageY; 
      circCentre.graphics.drawCircle(e.stageX, e.stageY, 100); 
      circCentre.graphics.endFill(); 
      _stage.addChild(circCentre); 
      trace("mc.addChild(circCentre)"); 

      // smaller outer circle 
      circCentre.addChild(circOuter); 
      // attach to parent; 
      circOuter.graphics.lineStyle(1, 0xDD2211); 
      circOuter.graphics.beginFill(0x66FF00); 
      circOuter.x = 200; 
      circOuter.y = e.stageY; 
      circOuter.graphics.drawCircle(200, e.stageY, 50); 
      circOuter.graphics.endFill(); 

      // the draw point; 
      circOuter.addChild(point); 
      point.graphics.moveTo(5, 0); 
      point.graphics.lineTo(5, 10); 
      point.graphics.moveTo(0, 5); 
      point.graphics.lineTo(10, 5); 
      point.x = 50; 
      point.y = 90; 
      _stage.addEventListener(Event.ENTER_FRAME, rotationDraw); 
      _stage.addEventListener(MouseEvent.MOUSE_UP, finish); 
     } 

     public function rotationDraw(e:Event):void 
     { 
      circCentre.rotation++; 
      circOuter.rotation++; 
     } 

     public function finish(e:MouseEvent):void 
     { 
      _stage.removeEventListener(Event.ENTER_FRAME, rotationDraw); 
     } 
    } 
} 

Answer 2

mc MovieClip没有尺寸，所以MOUSE_DOWN事件无效。你需要绘制这个命中区域。试试这个：

mc.graphics.beginFill(0xFFFFFF,0); 
mc.graphics.drawRect(0,0,800,600);//change 800,600 to whatever is your stage size