This branch is for GTK 4

The gtk-fortran project aims to offer scientists programming in Fortran a cross-platform library to build Graphical User Interfaces (GUI). Gtk-fortran is a partial GTK / Fortran binding 100% written in Fortran, thanks to the C / Fortran interoperability features introduced in the Fortran 2003 standard.

To install gtk-fortran, you can follow the quick instructions in the INSTALL file or the more detailed instructions on the wiki documentation.

Full documentation (wiki tab): https://github.com/vmagnin/gtk-fortran/wiki

Please post bugs on GitHub: https://github.com/vmagnin/gtk-fortran/issues

• README.md: the present file.
• CHANGELOG.md: list of the releases with main changes.
• CITATION.cff: file used by the GitHub interface (button "Cite this repository").
• CMakeLists.txt: main CMake instructions to build the project.
• codemeta.json: metadata about the project.
• fpm.toml: Fortran Package Manager manifest.
• INSTALL: quick installation instructions (see the Wiki for more details).
• LICENSE: text of the GNU GPL v3 license.
• LICENSE_EXCEPTION: text of the GCC Runtime Library Exception version 3.1.
• README-high-level: about the High Level part of the gtk-fortran library.
• VERSIONS: a CSV file with the gtk-fortran, GTK, GLib and distribution versions.

Please acknowledge the use of gtk-fortran by citing the following publication:

Vincent MAGNIN, James TAPPIN, Jens HUNGER, Jerry DE LISLE, "gtk-fortran: a GTK+ binding to build Graphical User Interfaces in Fortran", Journal of Open Source Software, 4(34), 1109, 12th January 2019, https://doi.org/10.21105/joss.01109