fltk: Fast Light Tool Kit (FLTK) fltk: fltk: The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is fltk: a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11), fltk: Microsoft(r) Windows(r), & MacOS(r) X. FLTK provides modern fltk: GUI functionality without the bloat & supports 3D graphics fltk: via OpenGL(r) & its built-in GLUT emulation. fltk: fltk: Homepage: http://www.fltk.org/ fltk: fltk: