I'm new to plugins in Filemaker, but am trying to make my own for the first time. I have the example plugins and c++ files from Filemaker, but I don't know how to change the .cpp file into a .fmplugin file.

Do I need CodeWarrior to do that, or can I use XCode?

The easiest way to do it is to use Codewarrior, as I haven't heard of anyone converting the supplied project files to XCode. You should just be able to open the codewarrior project and build it. 24U has a nice template that's also on the Developer CD (you'll probably need the updated version from their website). The 24U template has a codewarrior project that you can use to build both mac and win targets (assuming you have both compilers.)

Well I don't currently have Codewarrior. From what it looks like, from the filemaker website, their template is made to work with Codewarrior 8. However, Codewarrior 9 is out now. If I use that, will it still work?

I purchased codewarrior 9 and was able to get the 24U sample plugin to build and run. Make sure you update to v9.3 and make sure that you have Xcode 1.5 since codewarrior uses some of the libraries to build Mach-O executables.

I only have xcode 1.1. Can I still use CodeWarrior 9?

OK, I just found a store selling CodeWarrior 8. Should I get version 8 instead of 9 or does it matter. Any difference since I hve xcode v 1.1?