I don't know what compiler you used and what your real code looked like, but when I tried to compile some portions of your sample code with VC10, I got a lot of "use of undefined type" errors.

I am using Eclipse IDE for C/C++ Helios Service Release 2 and Ubuntu 10.04 LTS with its built-in GCC C++ compiler and linker. My software uses Linux-specific libraries, so VC10 is currently not an option for me. If I encounter any additional problems, then I will first compile the "skeleton code" of my state machines in VC10, find and solve the problem there, and then port the solution to Eclipse in Ubuntu. So, thanks for the tip!