Still a potentially handy and necessary effort, thanks for doing it. I am wondering if a type of PG Pro approach to an FB Cocoa would be the best approach to doing that. Simple UI builder (TWM lite), Editor for classes. etc a la RB, .m and .h file engine, then adds the needed 'runtime' stuff, then ships it all over to FBtoC for building. On Jun 5, 2011, at 1:39 AM, Robert Purves wrote: > It is now believed, contrary to previous rumour, that Interface > Builder (from Xcode 3 dev tools) can be made to run in OS X 10.7 > Lion. Carbon nibs and xibs will be editable if IB is set to open in > 32-bit mode. > > I did some groundwork for a xib editor written in FB, but don't > plan further development. Of course, if the previous rumour turns > out to be right, a xib editor will suddenly seem urgent. > 4toc.com/fb/XibEdit.zip [20 KB] > The demo shows how to parse XML and (at a higher level) how to read > and modify IBHIWindowTemplate objects. > > Robert P.