FLTK is retained. It’s, from my experience, the sanest of all toolkits - much easier and simpler to use than almost any other, for 98% of tasks, and usually fa

FLTK is retained. It’s, from my experience, the sanest of all toolkits - much easier and simpler to use than almost any other, for 98% of tasks, and usually faster. Back in 1998(!) when I started using it, it was also the only flicker free one for Windows and X (without very significant effort) although I believe that gap was finally closed circa 2008 or so.