Tutorials
In this section of the documentation, you will find tutorials to get started with gtk-fortran and GTK. Most tutorials are for GTK 4, but with the GTK 3 modifications given when possible.
- Installation: everything needed to install gtk-fortran on your machine (branches, dependencies) with detailed instructions for Linux, Windows, macOS and FreeBSD.
- My first gtk-fortran application - My first gtk-fortran application. You will create a GtkApplication with a window, some widgets and how to draw a bitmap image in Fortran.
- Drawing an image in a PNG file (without GUI) - Drawing an image in a PNG file (without GUI). You will draw in a PNG file using only the GdkPixbuf library: only 45 lines of Fortran code to draw a beautiful coloured Sierpinski Triangle!
- How to write a program also usable without GUI - How to write a gtk-fortran application that can be build with or without its GUI, in order to be executable on a machine where gtk-fortran is not installed.
- How-to use Glade3 and gtkf-sketcher to build more easily a complicated GUI (GTK 3 only).
- How to use gtk-fortran as a fpm dependency.
- How to start my own project from a gtk-fortran example?.
- Debugging with GtkInspector: inspect and edit your GUI on the fly.
- Programming in Modern Fortran - A HyperText-based introduction to programming in Fortran 2003, 2008, and 2018 on Unix. In the "User Interfaces, Graphics, and Plotting" chapter, you will find gtk-fortran.
- How to use GTK-Fortran with Code::Blocks IDE.
- The awesome Michael B. YouTube channel offers more than two hundreds video tutorials on GTK 3, and now GTK 4 (C language) !
- Gtk4 Tutorial for beginners: using C language.
- GTK4 for Graphical User Interfaces, with the Nim Programming Language: a "book" about GTK 4 (around ~67 printed pages).
- GtkDcoding - Musings of a GtkD Coder
- (fr) Cours d'interfaces graphiques d'Edouard Thiel (Université d'Aix-Marseille).
- Concerning designing a GUI, see GNOME Human Interface Guidelines.
You can also launch the gtk4-demo command (gtk-4-examples package) to run the official GTK examples and read their source code.
You can study the examples available in the examples/ directory, beginning by gtkzero_gapp.f90 (just creates an empty GTK window) and gtkhello.f90 (a window with two buttons). Those simple examples are heavily commented in order to help you learn the GTK basics.
Note that in GTK 4, the recommended way to write a GTK program is using GtkApplication like in the gtkzero_gapp.f90 example: in the gtk3 branch, it's the only example using GtkApplication. But if you use GTK 3, try to follow this example for your own programs in order to ease the porting to GTK 4.
If you want to draw progressively a picture pixel by pixel during a scientific computation, mandelbrot_pixbuf.f90 is a good starting point. You can even simply create a PNG file without creating any GUI, by using the GdkPixbuf library: see pixbuf_without_gui.f90.
