Maybe - if you help the IDE a little.
At the end of the first build, the system browse database (sysdefs.tag) is built by scanning include files found in all folders from Tools -> Options -> Folders tab, Type: Includes.
If you add folders to the list above, delete (or rename) the file sysdefs.tag in <install path>\bin folder, and rebuild a least one file in some project, it "should" work (IIRC).
Pelle