I am currently working on a Flex project which will require using features of the Flash 10 player. Flex Builder 3 normally publishes to the Flash 9 player. After doing a little bit of searching, I stumbled upon this page (Developing for Flash Player 10 in Flex Builder 3) which covers how to set up Flash Builder 3 to publish for Flash 10 player. It’s fairly straight forward and easy to follow. I also use FDT in conjunction with using Flex. I love the ActionScript editor in FDT. I think it is much better than the one in Flex Builder, but Flex Builder is still the way to go when editing your mxml files (in my opinion). Anyway, to get code hinting for Flash Player 10 in FDT, you can simply change the core library for the project. Right click on the project, Properties > FDT Parser. In the drop down, choose one of the Flex SDK’s for FP 10. In my case it is Flex_3_SDK_0_for_FP_10. Too bad configuring Flex Builder isn’t as easy.
Tags: flash, flex

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Thats cool im using flex Builder 3 now to code instead of using cs3 flash because flash crashes if you have over 4000 lines of code or so not all the time but sometimes, If I hit the scroll tab it closes and this is the case for windows or mac. Flex never crashed on my yet and I can see all the methods of my class files to and code complete works better too. bad part I still need flash to compile my swf but not run it its still better then jumping up and down because I lost all my work…
Hey Pier Shaw,
Thanks for your comment. You can use Flex to publish your swf files. You can create an ActionScript Project rather than a Flex project. Check out this link on About ActionScript projects