If the app you are porting already uses GTK or Coccoa , then you may be also interested into Mars
http://marsonpharo.wordpress.com/ I second what Stephane said that right now Morphic is the King as far as GUIs are concerned, documentation and available code. Spec is too much a moving target and far from replacing Morphic but its definitely a welcome clean up. Morphic is too messy at some areas but overall works really well considering anything you see inside pharo is build with it. I am also working on a new GUI API using Athens and Morphic. My focus is in custom drawn GUIs which is the exact opposite of Mars native look and some crazy ideas I have about gui design. On Sat, Nov 2, 2013 at 2:53 PM, Sergi Reyner <sergi.rey...@gmail.com> wrote: > > El 02/11/2013 11:25, "Stéphane Ducasse" <stephane.duca...@inria.fr> > escribió: > > > > - Tried and somewhat succeeded in building my GUI with Spec, which > apparently doesn't know about images. > > what do you mean about images. > > JPEG files, mostly >