MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador descarregar pdf (Página 176)

176 Create a Custom Component

Create a test file for the custom

component

You decide to build a login box as a custom MXML component. Before you start, however,

you need to create an MXML application file to test it. An MXML application file is an

MXML file that contains the

<mx:Application> root tag. You can’t compile and run an

MXML component on its own; you must instead compile and run an MXML application file

that uses the component.

In this section, you create an MXML application file to test your custom component.

1. With your Lessons project selected in the Navigator view, select File > New > MXML

Application and create an application file called Main.mxml.

2. Designate the Main.mxml file as the default file to be compiled by right-clicking (Control-

click on Macintosh) the file in the Navigator view and selecting Set As Default Application

from the context menu.

3. In the MXML editor’s Design mode, add a Panel container to the Main.mxml file by

dragging it from the Layout category of the Components view (Window > Components).

The Panel container is listed in the Layout category of components.

4. Select the Panel container in the Main.mxml file and set the following properties in the

Flex Properties view:

■ Title: Main Application Window

■ Width: 375

■ Height: 300

■ X: 20

■ Y: 20

NOTE

For the purpose of these lessons, several application files are used in a single Flex

Builder project. However, it’s good practice to have only one MXML application file

per project.

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MACROMEDIA COLDFUSION MX 7.0.2-USING COLDFUSION MX WITH FLEX 2 Guia do Utilizador Página 176