MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Betriebsanweisung PDF herunterladen (Seite 64)

64 Building a Flex Application

The previous example inserts the ActionScript code directly into the MXML code. Although

this technique works well for one or two lines of ActionScript code, for more complex logic

you typically define your ActionScript in an

<mx:Script> block, as the following example

shows:

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml">

<mx:Script>

<![CDATA[

// Define an ActionScript function.

private function duplicate():void {

myText.text=myInput.text;

}

]]>

</mx:Script>

<mx:Panel title="My Application">

<mx:TextInput id="myInput" width="150" text=""/>

<mx:TextArea id="myText" text="" width="150"/>

<mx:Button id="myButton" label="Copy Text"

click="duplicate();"/>

</mx:Panel>

</mx:Application>

In this example, you implement the event listener as an ActionScript function. Flex calls this

function in response to the user selecting the Button control. This techniques lets you separate

your MXML code from your ActionScript code. You can also choose to divide your

application into multiple files to increase its modularity. For more information, see Chapter 7,

“Using ActionScript,” on page 91.

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MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Betriebsanweisung Seite 64