New PDF release: Adobe Flex 3.0 For Dummies (For Dummies (Computer Tech))

By Doug McCune, Deepa Subramaniam

ISBN-10: 0470277920

ISBN-13: 9780470277928

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You can use Design mode to see how the application will look when it’s run and to edit the application and its components visually. You can easily switch to Design mode by clicking the Design 23 24 Par t I: Introducing Flex tab in the upper-left toolbar in Source mode (refer to Figure 2-3). ) When you click the Design tab, Flex Builder changes to Design mode, shown in Figure 2-6. This view has a design stage that shows how the application’s current state appears. Additionally, you can use the panels flanking the design stage to drag new Flex components to add to the design and to edit existing components.

Flex Builder offers a variety of toolbars that have buttons for invoking different actions, such as running, debugging, or profiling an application. To launch your Hello World project, click the Run button on the main code toolbar (refer to Figure 2-6), which is available in either Source mode or Design mode. Flex then builds the application and launches it in a browser window. By default, Flex Builder launches the application in your computer’s default Web browser. If problems exist in your application code, you see them written out to Problems view, at the bottom of the code editor window.

The following sections summarize some of the key differences between Flex and a few other RIA technologies. Flex versus Flash Whenever Doug tries to explain what he does for a living, someone always asks whether Flex is Flash. This question quickly leads to a heated discussion about Flash advertisements, and he has to calm everyone down and explain that, fundamentally, Flex is a Flash-based technology, but no, he doesn’t make those annoying ads — he makes applications. Flex is an application development framework and toolset that you can use to create RIAs.

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Adobe Flex 3.0 For Dummies (For Dummies (Computer Tech)) by Doug McCune, Deepa Subramaniam


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