README - Fast Light Tool Kit (FLTK) Version 1.4.4
What is FLTK?
The Fast Light Tool Kit (FLTK) is a cross-platform C++ GUI toolkit for UNIX®/Linux® (X11 or Wayland), Microsoft® Windows®, and macOS®. FLTK provides modern GUI functionality without bloat and supports 3D graphics via OpenGL® and its built-in GLUT emulation. It was originally developed by Mr. Bill Spitzak and is currently maintained by a small group of developers across the world with a central repository on GitHub.
https://www.fltk.org/ https://github.com/fltk/fltk/
Licensing
FLTK comes with complete free source code. FLTK is available under the terms of the GNU Library General Public License with exceptions (e.g. for static linking). Contrary to popular belief, it can be used in commercial software! (Even Bill Gates could use it.)
Online Documentation
The documentation in HTML and PDF forms can be created by Doxygen from the source files. HTML and PDF versions of this documentation are also available from the FLTK web site at:
https://www.fltk.org/documentation.php
Further Information
For more information see README.txt: https://github.com/fltk/fltk/blob/branch-1.4/README.txt