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fltk(3) Library Functions Manual fltk(3) NAME fltk - the fast light tool kit SYNOPSIS The Fast Light Tool Kit ("FLTK") is a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11 and Wayland), Microsoft(r) Windows(r), and macOS(r). FLTK provides modern GUI functionality without bloat and supports 3D graph- ics via OpenGL(r) and its built-in GLUT emulation. It was originally de- veloped by Mr. Bill Spitzak and is currently maintained by a small group of developers across the world with a central repository on GitHub. FLTK is provided under the terms of the GNU Library General Public License, with the following exceptions: 1. Modifications to the FLTK configure script, config header file, and makefiles by themselves to support a specific platform do not constitute a modified or derivative work. The authors do request that such modifications be contributed to the FLTK project - send all contributions through the "Software Trouble Report" on the following page: https://www.fltk.org/bugs.php 2. Widgets that are subclassed from FLTK widgets do not constitute a derivative work. 3. Static linking of applications and widgets to the FLTK library does not constitute a derivative work and does not require the au- thor to provide source code for the application or widget, use the shared FLTK libraries, or link their applications or widgets against a user-supplied version of FLTK. If you link the application or widget to a modified version of FLTK, then the changes to FLTK must be provided under the terms of the LGPL in sections 1, 2, and 4. 4. You do not have to provide a copy of the FLTK license with pro- grams that are linked to the FLTK library, nor do you have to iden- tify the FLTK license in your program or documentation as required by section 6 of the LGPL. However, programs must still identify their use of FLTK. The follow- ing example statement can be included in user documentation to sat- isfy this requirement: [program/widget] is based in part on the work of the FLTK project (https://www.fltk.org). SEE ALSO fltk-config(1), fluid(1) FLTK Programming Manual FLTK Web Site, https://www.fltk.org/ AUTHORS Bill Spitzak and others. 6 January 2002 Fast Light Tool Kit fltk(3)
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