Jens Lautenbacher <jtl(a)schlund.de&gt; writes: If you look at the code, you'll see that it's not *that* hard to support the three widget sets. They all use the Xt framework, so stuff like XtNextEvent, XtAddInput, etc. work on all without modification. Supporting Gtk should be approached like supporting a different window system. That requires some work, but it's not impossible for a motivated and competent hacker, as demonstrated by the Windows folks. Andy and Jareth have at least a passing understanding of Lucid widget code. Now that we have Ben reachable and in our ranks, you can add him to the list, more likely than not. See above. I can expound on that some more, but I'd prefer someone who understands *both* XEmacs and Gtk to do that.