Gtk Quartz under MacOS
Is there some work on this?
No work has been done on this and there is not any planned soon. It would be nice to have and if someone wants to contribute, that would be great. OSX support is being added to the OpenTK project, and it is possible that once that is stable, I may look into using that as a basis for OSX support in GLWidget.
OSX support should be working with OpenTK 1.0