Comment by luke8086

This was also my first thought, but looks like it's already designed to be toolkit-agnostic, like NetSurf. So it should be easy to port to fltk or anything else.

  $ ls -1 fixgui_\*.c
  fixgui_cocoa.c
  fixgui_gtk.c
  fixgui_haiku.c
  fixgui_win32.c