1fltk(3) Library Functions Manual fltk(3)
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6 fltk - the fast light tool kit
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10 The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a C++ graph‐
11 ical user interface toolkit for the X Window System, MacOS(r), and Mi‐
12 crosoft Windows(r) that supports OpenGL(r). It was originally devel‐
13 oped by Mr. Bill Spitzak and is currently maintained by a small group
14 of developers across the world with a central repository in the US.
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16 FLTK is provides under the terms of the GNU Library General Public
17 License, with the following exceptions:
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19 1. Modifications to the FLTK configure script, config header
20 file, and makefiles by themselves to support a specific platform
21 do not constitute a modified or derivative work.
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23 The authors do request that such modifications be contributed to
24 the FLTK project - send all contributions to
25 "fltk-bugs@fltk.org".
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27 2. Widgets that are subclassed from FLTK widgets do not consti‐
28 tute a derivative work.
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30 3. Static linking of applications and widgets to the FLTK
31 library does not constitute a derivative work and does not
32 require the author to provide source code for the application or
33 widget, use the shared FLTK libraries, or link their applica‐
34 tions or widgets against a user-supplied version of FLTK.
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36 If you link the application or widget to a modified version of
37 FLTK, then the changes to FLTK must be provided under the terms
38 of the LGPL in sections 1, 2, and 4.
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40 4. You do not have to provide a copy of the FLTK license with
41 programs that are linked to the FLTK library, nor do you have to
42 identify the FLTK license in your program or documentation as
43 required by section 6 of the LGPL.
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45 However, programs must still identify their use of FLTK. The
46 following example statement can be included in user documenta‐
47 tion to satisfy this requirement:
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49 [program/widget] is based in part on the work of the FLTK
50 project (http://www.fltk.org).
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53 fltk-config(1), fluid(1)
54 FLTK Programming Manual
55 FLTK Web Site, http://www.fltk.org/
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58 Bill Spitzak and others.
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626 January 2002 Fast Light Tool Kit fltk(3)