讨厌的DragManager
在一个容器上覆盖了层，透明png，然后容器里面就接受不到drag的任何事件了。翻看flex框架代码发现是在DragProxy里面做的判断，还是没有对drag忽略的代码。
没辙了，只好用MouseMove来做了：
<?xml version="1.0"?> <!-- Simple example to demonstrate the ComboBox control. --> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:local="*" applicationComplete="applicationCompleteHandler()"> <mx:Canvas id="ppp" width="440" height="267" backgroundColor="#FFFFFF" blendMode="{BlendMode.LAYER}"> <mx:Image source="Creek.jpg" maintainAspectRatio="false" mouseEnabled="false" mouseChildren="false" width="100%" height="100%"/> <mx:Canvas id="c" width="80%" height="80%" horizontalCenter="0" verticalCenter="0" borderStyle="solid" borderThickness="20" borderColor="#33003E" backgroundColor="#E8E8E8"/> <local:DragIgnoreImage mouseEnabled="false" mouseChildren="false" width="100%" height="100%"/> </mx:Canvas> <mx:Image id="p" width="100" height="100" source="Desert Landscape.jpg" mouseDown="imageMouseDownHandler(event)"/> <mx:List dragEnabled="true"> <mx:dataProvider> <mx:String>AK</mx:String> <mx:String>AL</mx:String> <mx:String>AR</mx:String> </mx:dataProvider> </mx:List> <mx:Script> <![CDATA[ import mx.core.IFlexDisplayObject; import mx.core.DragSource; import mx.core.UIComponent; import mx.events.DragEvent; import mx.managers.DragManager; private function applicationCompleteHandler():void { stage.addEventListener(MouseEvent.MOUSE_DOWN,stageMousedownhandler); } private function stageMousedownhandler(e:MouseEvent):void { stage.addEventListener(MouseEvent.MOUSE_MOVE,stageMouseMovehandler); stage.addEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler); } private function stageMouseMovehandler(e:MouseEvent):void { var p:Point = new Point(e.stageX,e.stageY); p = c.globalToLocal(p); if(DragManager.isDragging) { if(c.getBounds(c).containsPoint(p)) { c.setStyle("backgroundColor",0xFFFFF000); } else { c.setStyle("backgroundColor",0xFF00F000); } } } private function stageMouseUpHandler(e:MouseEvent):void { stage.removeEventListener(MouseEvent.MOUSE_MOVE,stageMouseMovehandler); stage.removeEventListener(MouseEvent.MOUSE_UP,stageMouseUpHandler); } private function imageMouseDownHandler(e:MouseEvent):void { var dragInitiator:Image=p; var ds:DragSource = new DragSource(); ds.addData(dragInitiator, "img"); var d:Image = new Image(); d.width = d.height = 100; d.source = p.source; DragManager.doDrag(dragInitiator, ds, e,d); } ]]> </mx:Script> </mx:Application>
相关资源：敏捷开发V1.0.pptx
