在FLEX中创建不可以拖拽的ALERT组件.

重点是在鼠标按下的时候调用事件处理程序的 stopImmediatePropagation() 方法.

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/03/21/creating-an-undraggable-alert-control-in-flex/  -->
< mx:Application  xmlns:mx ="http://www.adobe.com/2006/mxml"
        layout ="vertical"
        verticalAlign ="middle"
        backgroundColor ="white" >

     < mx:Script >
         <![CDATA[
            import mx.controls.Alert;

            private function draggableAlert():void {
                Alert.show("Drag me!");
            }

            private function undraggableAlert():void {
                var alert:Alert = Alert.show("Drag me!");
                alert.addEventListener(MouseEvent.MOUSE_DOWN, alert_mouseDown, true);
            }

            private function alert_mouseDown(evt:MouseEvent):void {
                evt.stopImmediatePropagation();
            }
         ]]>
     </ mx:Script >

     < mx:ApplicationControlBar  dock ="true" >
         < mx:Button  label ="Draggable Alert"
                click ="draggableAlert();"   />
         < mx:Button  label ="Undraggable Alert"
                click ="undraggableAlert();"   />
     </ mx:ApplicationControlBar >

</ mx:Application >

来自： http://blog.flexexamples.com/2008/03/21/creating-an-undraggable-alert-control-in-flex/