FLTK - Fast Light Tool Kit - https://github.com/fltk/fltk - cross platform GUI development
Clone or download
Albrecht-S Quick fix: menu disappearing (STR #3503 continued)
Quick fix to repair a case when Fl_Menu_Item::pulldown() was called with only
five arguments (argument pbutton == null) as discussed here:

d87ac9b#comments
Latest commit 9ea0d4c Dec 11, 2018
Permalink
Type Name Latest commit message Commit time
Failed to load latest commit information.
CMake Removed macro FL_PORTING, as it has been more confusing than helpful. Jun 23, 2018
FL Better Doxygen explanation of the use of Fl::paste(). Dec 5, 2018
GL Modifications to all LGPL headers for STR #2685. Jul 19, 2011
cairo Fix macOS 10.14 Mojave support of the FLTK-cairo interface. Nov 9, 2018
documentation Rename README files to README.txt (and several similar files). Dec 10, 2018
examples Update examples: minor changes, rename, update .gitignore Dec 10, 2018
fluid Fix 'fluid.app' for case sensitive macOS file systems. Dec 4, 2018
ide/AndroidStudio3 Rename README files to README.txt (and several similar files). Dec 10, 2018
jpeg Replace "WIN32" with "_WIN32" or "Windows". Feb 9, 2018
lib Rename README files to README.txt (and several similar files). Dec 10, 2018
misc Rename README files to README.txt (and several similar files). Dec 10, 2018
nanosvg Update bundled nanosvg lib to latest upstream version. Jul 1, 2018
png Remove obsolete watcom makefiles. Mar 17, 2015
public Activate GitLab CI and GitLab Pages (HTML docs). Jun 22, 2018
src Quick fix: menu disappearing (STR #3503 continued) Dec 11, 2018
test Rename README files to README.txt (and several similar files). Dec 10, 2018
zlib Remove obsolete watcom makefiles. Mar 17, 2015
.clang-format Update .clang-format, improve comments. Dec 19, 2017
.gitattributes Remove file with Windows crlf line endings from .gitattributes. Aug 10, 2018
.gitignore Update examples: minor changes, rename, update .gitignore Dec 10, 2018
.gitlab-ci.yml Update GitLab CI configuration (comments only). Jul 31, 2018
ANNOUNCEMENT Fix ignored files, add 'build' directory to ignored files. Nov 11, 2016
CHANGES.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
CHANGES_1.0.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
CHANGES_1.1.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
CHANGES_1.3.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
CMakeLists.txt More Android changes. Mar 2, 2018
COPYING Finished up changes for references to fltk-bugs@fltk.org -> STR form. Apr 28, 2010
CREDITS.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
DartConfig.cmake Cmake updates (STR #645) Feb 6, 2005
Makefile Rename configure.in to configure.ac. Sep 30, 2016
README.Android.txt Android: Drawing RGB image data (and probaly rgba and grayscale as we… Mar 31, 2018
README.CMake.txt Added the new OPTION_USE_NANOSVG to the README.CMake.txt file. Sep 6, 2017
README.Cairo.txt Update several README files, remove obsolete information. Jul 5, 2017
README.IDE.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
README.OSX.txt Fix 'fluid.app' for case sensitive macOS file systems. Dec 4, 2018
README.Pico.txt MSWindows fixes for previous commits. Apr 17, 2016
README.Unix.txt Replace "WIN32" with "_WIN32" or "Windows". Feb 9, 2018
README.Windows.txt Replace "WIN32" with "_WIN32" or "Windows". Feb 9, 2018
README.abi-version.txt Update several README files, remove obsolete information. Jul 5, 2017
README.bundled-libs.txt Update (reformat) README.bundled-libs.txt. Oct 8, 2018
README.md Remove the statement that this is a mirror. Dec 3, 2018
README.txt Rename README files to README.txt (and several similar files). Dec 10, 2018
VERSION Bump version numbers for next minor release: FLTK 1.4.0. Jan 30, 2016
abi-version.cmake.in Remove copyright markers from abi-version.* (STR #3161). Jul 29, 2016
abi-version.in Remove copyright markers from abi-version.* (STR #3161). Jul 29, 2016
autogen.sh Add an autogen.sh script as is customary for autoconf based Dec 13, 2013
configh.cmake.in Removed macro FL_PORTING, as it has been more confusing than helpful. Jun 23, 2018
configh.in Removed macro FL_PORTING, as it has been more confusing than helpful. Jun 23, 2018
configure.ac Recent (circa early 2018) versions of the Mingw32 headers have change… Jun 18, 2018
fltk-config.in Fix line endings and other (svn) properties of fltk-config.in. Aug 3, 2018
fltk.list.in Rename README files to README.txt (and several similar files). Dec 10, 2018
fltk.spec.in [Version 1.3.4] Update version numbers - hopefully complete. Mar 10, 2015
fltk.xpm Add FLTK logo file for distributions. Jun 13, 2003
forms.h Initial revision Oct 6, 1998
install-sh Make sure INSTALL command uses absolute path for install-sh... Feb 8, 2007
mac_endianness.h Modifications to all LGPL headers for STR #2685. Jul 19, 2011
makeinclude.in CMake: Fix fltk-config for Windows and Unix/Linux. Feb 23, 2018
makesrcdist Update makesrcdist to work with Git. Work in progress. Oct 18, 2018

README.md

README - Fast Light Tool Kit (FLTK) Version 1.4.0

** This FLTK repository is now our official source code repository. **

WHAT IS FLTK?

The Fast Light Tool Kit ("FLTK", pronounced "fulltick") is a
a cross-platform C++ GUI toolkit for UNIX(r)/Linux(r) (X11),
Microsoft(r) Windows(r), and MacOS(r) X. FLTK provides
modern GUI functionality without the bloat and supports 3D
graphics via OpenGL(r) 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 in the US.

For more information see file README.