As suggested here, I have some parts in my code, that are enabled by a compilation flag.
For example I have this piece of code:
I think you just need to disable preprocessing at all by setting
NO in doxygen configuration file.
doxywizard go to Expert -> Preprocessor and you will find
ENABLE_PREPROCESSING. Just uncheck it to set it to
More information about preprocessing in doxygen can be found in documentation here.