A complete and comprehensive reference for developers on the Flex platform 4 new Creating a desktop application that behaves identically on Windows, Mac OS X, and Linux with a new platform Adobe Flash Builder 4 and the guide depth. Shows you how to create rich applications for the Web and the desktop with the most recent version of the Flex, with detailed coverage for both new and veteran application developers Flex Walks you through the basics of Flex; upgrade from Flex 3; how to create desktop applications with AIR; and integrating Flex applications with the most popular application servers, including ColdFusion, ASP.NET, and PHP Includes extensive code examples of common tasks that you can use to jump-start your development project Flex your muscle development with Flex 4 and this comprehensive guide.