Creating an undraggable Alert control in Flex

The following example shows how you can create a Flex Alert control that isn’t draggable by listening for the mouseDown event and calling the stopImmediatePropagation() method in the event handler.

Full code after the jump.

 

<?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>

转自： http://www.cnblogs.com/taobataoma/archive/2008/08/28/1278192.html