GTK is a multi-platform toolkit for creating graphical user interfaces.
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Emmanuele Bassi 0bbe68db0b Implement GtkSelectionModel for GtkNotebookPages
The documentation says that the model returned by
gtk_notebook_get_pages() implements the GtkSelectionModel interface, but
checking the history confirms this is a lie.

Instead of fixing the documentation, we can easily make it true, and
reduce the differences between GtkNotebook and GtkStack.

Fixes: #5837
2023-05-16 16:59:05 -04:00
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docs docs: Mention pixbufs in the migration guide 2023-05-15 23:05:52 -04:00
examples Add a README to examples/hello 2023-05-13 21:56:29 -04:00
gdk gdk: Clamp frame region to surface size 2023-05-16 18:53:09 +02:00
gsk nodeparser: Move an error check 2023-05-16 18:53:53 +02:00
gtk Implement GtkSelectionModel for GtkNotebookPages 2023-05-16 16:59:05 -04:00
modules gstreamer: Defer the sync 2023-04-28 06:23:45 +02:00
po Update Catalan translation 2023-05-12 19:42:35 +02:00
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tests Add testfilelauncher 2023-05-15 00:20:24 -04:00
testsuite Merge branch 'matthiasc/for-main' into 'main' 2023-05-16 20:42:27 +00:00
tools Only build iconcache validator if it is used 2023-05-15 23:06:07 -04:00
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AUTHORS AUTHORS: some updates 2020-09-12 11:52:14 -04:00
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NEWS Post-release version bump 2023-05-09 20:48:33 -04:00
NEWS.pre-1.0 Split NEWS 2018-01-10 19:06:45 -05:00
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NEWS.pre-4.0 Split NEWS for pre-4.0 changes 2021-01-19 10:40:09 +01:00
README.md README: Updates 2023-04-28 17:31:12 -04:00

GTK — The GTK toolkit

Build status

General information

GTK is a multi-platform toolkit for creating graphical user interfaces. Offering a complete set of widgets, GTK is suitable for projects ranging from small one-off projects to complete application suites.

GTK is a free and open-source software project. The licensing terms for GTK, the GNU LGPL, allow it to be used by all developers, including those developing proprietary software, without any license fees or royalties.

GTK is hosted by the GNOME project (thanks!) and used by a wide variety of applications and projects.

The official download location

The official web site

The official developers blog

Discussion forum

Nightly documentation can be found at

Nightly flatpaks of our demos can be installed from the GNOME Nightly repository:

  • flatpak remote-add --if-not-exists gnome-nightly https://nightly.gnome.org/gnome-nightly.flatpakrepo
  • flatpak install gnome-nightly org.gtk.Demo4
  • flatpak install gnome-nightly org.gtk.WidgetFactory4
  • flatpak install gnome-nightly org.gtk.IconBrowser4

Building and installing

In order to build GTK you will need:

You will also need various dependencies, based on the platform you are building for:

If you are building the X11 backend, you will also need:

  • Xlib, and the following X extensions:
    • xrandr
    • xrender
    • xi
    • xext
    • xfixes
    • xcursor
    • xdamage
    • xcomposite

If you are building the Wayland backend, you will also need:

  • Wayland-client
  • Wayland-protocols
  • Wayland-cursor
  • Wayland-EGL

Once you have all the necessary dependencies, you can build GTK by using Meson:

$ meson _build .
$ cd _build
$ ninja

You can run the test suite using:

$ meson test

And, finally, you can install GTK using:

$ sudo ninja install

Complete information about installing GTK and related libraries can be found in the file:

docs/reference/gtk/html/gtk-building.html

Or online

Building from git

The GTK sources are hosted on gitlab.gnome.org. The main development branch is called main, and stable branches are named after their minor version, for example gtk-4-10.

How to report bugs

Bugs should be reported on the issues page.

In the bug report please include:

  • Information about your system. For instance:

    • which version of GTK you are using
    • what operating system and version
    • for Linux, which distribution
    • if you built GTK, the list of options used to configure the build

    And anything else you think is relevant.

  • How to reproduce the bug.

    If you can reproduce it with one of the demo applications that are built in the demos/ subdirectory, on one of the test programs that are built in the tests/ subdirectory, that will be most convenient. Otherwise, please include a short test program that exhibits the behavior. As a last resort, you can also provide a pointer to a larger piece of software that can be downloaded.

  • If the bug was a crash, the exact text that was printed out when the crash occurred.

  • Further information such as stack traces may be useful, but is not necessary.

Contributing to GTK

Please, follow the contribution guide to know how to start contributing to GTK.

If you want to support GTK financially, please consider donating to the GNOME project, which runs the infrastructure hosting GTK.

Release notes

The release notes for GTK are part of the migration guide in the API reference. See:

Licensing terms

GTK is released under the terms of the GNU Lesser General Public License, version 2.1 or, at your option, any later version, as published by the Free Software Foundation.

Please, see the COPYING file for further information.

GTK includes a small number of source files under the Apache license:

  • A fork of the roaring bitmaps implementation in gtk/roaring
  • An adaptation of timsort from python in gtk/timsort