Code generation and parsing

[solidstate1991 via Digitalmars-d]

Recently I have a big problem with creating windows for my game 
engine (PixelPerfectEngine, see it in dub), so I thought I create 
a tool that would help me create windows for various other tools 
of the engine (primarily for the map editor) or for games.

Is there some similar open-source tool (not necessarily for D) 
where I can borrow a few ideas from? In the future I could even 
make similar tools for other frameworks too as an exchange.