MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador descarregar pdf (Página 149)

Associate the listener with an event with ActionScript 149

4. Enter the following function immediately before the convertCurrency function in the

<mx:Script> tag:

public function createListener():void {

btnConvert.addEventListener(MouseEvent.CLICK, convertCurrency);

}

When the user clicks the btnConvert button, the convertCurrency event listener is

notified that a triggering event has occurred. The listener function performs the currency

calculation and displays the results.

The script block should look as follows:

<mx:Script>

<![CDATA[

import flash.events.MouseEvent;

public function createListener():void {

btnConvert.addEventListener(MouseEvent.CLICK, convertCurrency);

}

public function convertCurrency(e:MouseEvent):void {

var rate:Number = 120;

var price:Number = Number(txtPrice.text);

if (isNaN(price)) {

lblResults.text = "Please enter a valid price.";

} else {

price = price * rate;

lblResults.text = "Price in Yen: " + String(price);

}

]]>

</mx:Script>

In the <mx:Application> tag, enter the following property so that the

createListener() function is called and the event listener is registered immediately after

the application is created:

creationComplete="createListener();"

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MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador Página 149