no, it doesn't. All the parsing is hardwired. Frankly i'd vote to use an alternative engine, and use only the integrated parser only c++ projects.
Also, i understand that the Code::Bocks parser has to be "fault tolerant", but is this really necessary? I mean, if the code doesn't appear in the class browser, it means it won't compile anyway, so that "minus" would be really a "plus". What do you think guys?
(note: Of course this wouldn't change before 1.0 is released)