MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador descarregar pdf (Página 86)

86 Using MXML

Writing a simple application

Because MXML files are ordinary XML files, you have a wide choice of development

environments. You can write MXML code in a simple text editor, a dedicated XML editor, or

an integrated development environment (IDE) that supports text editing. Adobe supplies a

dedicated IDE called Flex Builder that you can use to develop your applications.

The following example shows a simple “Hello World” application that contains just an

<mx:Application> tag and two child tags, the <mx:Panel> tag and the <mx:Label> tag. The

<mx:Application> tag is always the root tag of a Flex application. The <mx:Panel> tag

defines a Panel container that includes a title bar, a title, a status message, a border, and a

content area for its children. The

<mx:Label> tag represents a Label control, a very simple

user interface component that displays text.

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

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

<mx:Panel title="My Application" paddingTop="10" paddingBottom="10"

paddingLeft="10" paddingRight="10" >

<mx:Label text="Hello World!" fontWeight="bold" fontSize="24" />

</mx:Panel>

</mx:Application>

Save this code to a file named hello.mxml. MXML filenames must end in a lowercase .mxml

file extension. You can then compile and run the resultant SWF file.

The following figure shows the “Hello World” application rendered in a web browser

window:

1 2 ... 81 82 83 84 85 86 87 88 89 90 91 ... 255 256

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MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador Página 86