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FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
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C++ 52.5%
C 41.9%
Objective-C++ 1.9%
Roff 1.8%
CMake 1.4%
Other 0.4%
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Albrecht Schlosser 1fd6f0dd3a Fix STR 3458: "GLUT compatibility mode segfaults" 
... "when there's no current window".

Silently ignore GLUT function calls that need a current window if the
current window is NULL, return 0 from functions that return an 'int'.

Check if window is shown in Fl_X11_Gl_Window_Driver::swap_buffers().
This would issue "XRequest.nnn: GLXBadDrawable 0x0" on X11 otherwise.

Note: the chosen implementation to ignore GLUT calls silently appears
to be compatible with GLUT (3.7) whereas FreeGLUT 3.0 would issue error
messages and exit. The latter could be implemented as well but would
be much more work.
2023-10-07 17:14:11 +02:00
.github Fl_String refactoring and extension (#683) 2023-02-23 15:42:05 +01:00
cairo CMake: build shared libs with OPTION_CAIROEXT (issue #250) 2023-03-09 17:34:05 +01:00
CMake CMake: Make compile definitions 'FL_LIBRARY' and 'FL_DLL' private 2023-08-28 15:21:58 +02:00
documentation Enhance info about documentation generation 2023-10-03 09:19:36 +02:00
examples Improved, yet compatible, widget callback system using macros (#729) 2023-08-15 11:36:58 +02:00
FL Fix STR 3458: "GLUT compatibility mode segfaults" 2023-10-07 17:14:11 +02:00
fltk-options Fix more compiler warnings (comma at end of enum) 2023-04-13 22:55:18 +02:00
fluid Removes stray files. 2023-10-06 15:39:53 +02:00
GL
jpeg Update bundled libjpeg to version 9e - cont'd 2023-01-17 14:08:57 +01:00
lib Improve documentation about library build folders and more 2021-10-04 14:42:32 +02:00
libdecor Update libdecor to commit 422abaf9 dated 2023-09-07 2023-09-13 11:51:39 +02:00
misc Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
nanosvg Update bundled nanosvg library to current upstream version 2022-12-22 01:13:45 +01:00
png Fix Visual Studio shared library build 2023-09-12 23:18:46 +02:00
public
src Fix STR 3458: "GLUT compatibility mode segfaults" 2023-10-07 17:14:11 +02:00
test Fix STR 3458: "GLUT compatibility mode segfaults" 2023-10-07 17:14:11 +02:00
util Move src/cmap.cxx to util/cmap.cxx (utilities folder) 2022-03-27 17:05:55 +02:00
zlib Upgrade bundled zlib to version 1.3 dated 18-aug-2023 2023-08-23 12:29:03 +02:00
.clang-format Update .clang-format control file 2022-03-31 15:57:10 +02:00
.gitattributes Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
.gitignore Very controlled GDIplus startup and shutdown #635 (#679) 2023-02-11 19:14:23 +01:00
.gitlab-ci.yml GitLab CI: fix syntax error 2022-08-17 15:29:18 +02:00
ANNOUNCEMENT
autogen.sh Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
CHANGES_1.0.txt
CHANGES_1.1.txt
CHANGES_1.3.txt
CHANGES.txt Fix for CLEAR flag in Fl_Preferences 2023-09-27 12:26:35 +02:00
CMakeLists.txt Update 'cmake_minimum_required' version to 3.12.0 2023-08-26 18:07:54 +02:00
config.guess Add autoconf cross-compilation support files. 2021-02-13 17:17:43 -05:00
config.sub Add autoconf cross-compilation support files. 2021-02-13 17:17:43 -05:00
configh.cmake.in Remove usage of __APPLE_QUARTZ__ (#673) 2023-02-06 21:42:40 +01:00
configh.in Remove usage of __APPLE_QUARTZ__ (#673) 2023-02-06 21:42:40 +01:00
configure.ac Fix "Provide --without-fluid configure option" - cont'd (#725) 2023-05-10 14:41:48 +02:00
COPYING
CREDITS.txt
fl_config.cmake.in Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
fl_config.in Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
fltk_version.dat Rename file 'VERSION' to 'fltk_version.dat' (#191) 2021-02-20 13:46:34 +01:00
fltk-config.in Fix more missing quotes in fltk-config.in (#714) 2023-04-13 22:13:18 +02:00
fltk.list.in Move global FLTK options into new app fltk-admin (#560) 2023-01-21 17:14:41 +01:00
fltk.spec.in CMake: refactor and reformat CMake files 2020-07-15 00:34:53 +02:00
fltk.xpm
forms.h
install-sh
mac_endianness.h
Makefile Fix "Provide --without-fluid configure option" - cont'd (#725) 2023-05-10 14:41:48 +02:00
makeinclude.in Fix "Provide --without-fluid configure option " (#725) 2023-05-09 16:19:12 +02:00
makesrcdist Fix README files and remove stale config.guess and config.sub 2021-11-24 15:01:45 +01:00
README.abi-version.txt Generate FL/fl_config.h rather than FL/abi-version.h 2021-12-18 22:44:08 +01:00
README.Cairo.txt Make hybrid Wayland/X11 platform. 2022-08-29 12:15:32 +02:00
README.CMake.txt Enhance info about documentation generation 2023-10-03 09:19:36 +02:00
README.experimental.txt Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
README.IDE.txt Remove experimental platforms Android, Pico, SDL (PR #376) 2022-01-23 18:12:47 +01:00
README.macOS.md update README.macOS.md (Creating new Projects) 2022-04-14 13:05:33 +02:00
README.md Reversed README.md 2023-09-28 16:01:29 +02:00
README.txt README.txt: fix Wayland-related configure options 2023-09-15 12:27:33 +02:00
README.Unix.txt Missing lines in Unix README 2023-08-08 17:14:08 +02:00
README.Wayland.txt Wayland.dox: add info about the xdg decoration protocol 2023-07-28 15:27:38 +02:00
README.Windows.txt Generate FL/fl_config.h rather than FL/abi-version.h 2021-12-18 22:44:08 +01:00

README.md

README - Fast Light Tool Kit (FLTK) Version 1.4.0

WHAT IS FLTK?

The Fast Light Tool Kit is a cross-platform C++ GUI toolkit for 
UNIX®/Linux® (X11 or Wayland), Microsoft® Windows®, and macOS®.
FLTK provides modern GUI functionality without the 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.

For more information see README.txt:
https://github.com/fltk/fltk/blob/master/README.txt

Build