Download Adobe Flex 3.0 For Dummies by Doug McCune, Deepa Subramaniam PDF

By Doug McCune, Deepa Subramaniam

Able to flex your internet improvement muscle groups and begin construction wealthy net purposes? With Flex 3.0, you could create nice RIAs that practice like computing device purposes utilizing Adobe Flash participant, that's already put in on greater than ninety five percentage of Internet-connected desktops. And the thrill and simple way™ to wake up to hurry on Flex is with Adobe Flex 3.0 For Dummies.
This pleasant advisor indicates you ways Flex allows you to leverage the facility of Adobe’s ubiquitous Flash expertise to construct huge functions. If you’ve written code in any language, Adobe Flex 3.0 For Dummies gets you begun, introduce you to FlexBuilder and the Flex framework, and feature you development a few relatively “flashy” stuff sooner than you recognize it. You’ll learn how to:<ul type="disc">* increase interactive functions with no being concerned approximately browser modifications* Use the development version* paintings with ActionScript and MXML* construct uncomplicated consumer interface controls and data-driven controls* arrange info binding* layout and validate consumer information* Create, run, and fresh a venture* discover Flex supervisor sessions* paintings with styling and skinning Flex components
All the code utilized in the publication is at the better half website to save lots of you that rather more time. Adobe Flex 3.0 For Dummies is helping you develop into Flex-literate in a flash!
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Flex Builder provides not only tag-level code hinting but also attribute code hinting. ” /> Flex Builder created the default Application tag with the layout property set to absolute, which means that all child components will be positioned Chapter 2: Building Your First Flex Application based on their x and y properties. Because the Label control hasn’t specified an explicit x, y position, the Application container places the Label control at its default position: 0,0. This position indicates that the Label control lives at the upper-left corner of the screen.

One big difference between the two languages involves the strict-typing of ActionScript 3, which supports compile-time type checking. When you declare a variable, you specify which type of variable it is — a String or Number or any custom class you might be using. The following line of code declares a variable named myDate that is a Date: var myDate:Date = new Date(1982, 1, 16); Because the myDate variable is declared as a Date object, if you try to assign any value that isn’t a Date, the compiler catches it and notifies you.

Your functions generally look like this: private function eventHandler(event:Event):void { //do your event handling stuff here } Notice that the event parameter is an Event object. Event handlers are always passed an Event object that has a few important properties. Most importantly, the Event object has a property named target that identifies the component that dispatched the event. Be aware also of a different property named currentTarget. The differences between target and currentTarget are discussed later in this chapter, when we cover event bubbling.

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