using the Alert object returned from the show() method

        

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<!-- controls\alert\AlertSize.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark"
    xmlns:mx="library://ns.adobe.com/flex/mx">
    <fx:Script>
         
        import mx.controls.Alert; 
        import mx.events.CloseEvent; 
        // Define variable to hold the Alert object. 
        public var myAlert:Alert; 
        private function openAlert():void { 
            myAlert = Alert.show("Copy Text?", "Alert",Alert.OK | Alert.CANCEL); 
            // Set the height and width of the Alert control. 
            myAlert.height=250; 
            myAlert.width=250; 
        } 
      
    </fx:Script>
    <s:VGroup>
        <s:TextInput id="myInput" width="150" text="" />
        <s:Button id="myButton" label="Copy Text" click="openAlert();" />
        <s:TextInput id="myText" />
    </s:VGroup>
</s:Application>

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using the Alert object returned from the show() method : Alert « Components « Flex

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