GTK is a multi-platform toolkit for creating graphical user interfaces.
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Ray Strode 05736afaf8 x11: be more verbose when glClientWaitSync behaves unexpectedtly
When given a 0 timeout, glClientWaitSync is only supposed to return one
of three possible values:

 - GL_ALREADY_SIGNALED - fence fired
 - GL_WAIT_FAILED - there was an error
 - GL_TIMEOUT_EXPIRED - fence hasn't fired yet

In addition, it can also return GL_CONDITION_SATISFIED if a non-zero
timeout is passed, and the fence fires while waiting on the timeout.

Since commit 972134abe4 we now call
glClientWaitSync (with a 0 timeout), but one user is reporting it's
returning some value that's not one of the above four.

This commit changes the g_assert to a g_error so we can see what
value is getting returned.

May help with https://gitlab.gnome.org/GNOME/gtk/-/issues/2858
2020-06-22 11:16:32 -04:00
.gitlab/issue_templates issue templates: reproducers should be written in C 2019-05-18 13:47:59 +02:00
.gitlab-ci CI: install a newer pango for MSYS2 2020-05-30 15:47:02 +02:00
build-aux flatpak: Build against the master runtime 2020-02-07 09:17:51 -05:00
demos Merge branch 'matthiasc/for-master' into 'master' 2020-06-22 13:11:13 +00:00
docs dropdown: Add GtkDropDown:selected-item 2020-06-20 13:11:48 -04:00
examples examples: Stop using appmenu apis 2020-05-22 17:31:05 -04:00
gdk x11: be more verbose when glClientWaitSync behaves unexpectedtly 2020-06-22 11:16:32 -04:00
gsk transform: Fix docs to use "transform" instead of "matrix" 2020-06-19 05:26:25 +02:00
gtk filter: Make GtkEveryFilter buildable 2020-06-21 13:10:18 -04:00
modules cups: Use allow/ignore list 2020-06-18 16:58:43 +01:00
po Updated Lithuanian translation 2020-06-21 14:47:05 +03:00
po-properties Updated Lithuanian translation 2020-06-21 14:47:05 +03:00
subprojects Add libcloudproviders as a fallback subproject 2020-06-17 14:06:20 -04:00
tests testlistdnd: Use editable labels 2020-06-19 16:30:25 -04:00
testsuite Rename master and slave device 2020-06-18 19:22:20 +01:00
.clang-format ci: Add a style check pass 2020-02-11 14:47:22 +00:00
.gitignore .gitignore: Ignore all subdirs in the subprojects dir 2018-10-12 14:23:53 +05:30
.gitlab-ci.yml ci: Enable libcloudproviders support 2020-06-17 14:06:20 -04:00
AUTHORS small update 2006-03-24 03:09:08 +00:00
config.h.meson x11: Add back support for the damage extension 2020-06-05 10:01:13 -04:00
CONTRIBUTING.md Update CONTRIBUTING.md 2020-05-06 15:08:36 -04:00
COPYING Change FSF Address 2012-02-27 17:06:11 +00:00
gtk4-unix-print.pc.in Adjust some more pkg-config references for gtk+ to gtk rename 2019-02-06 09:56:08 +01:00
gtk4.pc.in gtk4.pc: Move third-party libraries from Libs to Libs.private 2019-07-18 09:24:41 +01:00
gtk.doap Rename project files 2019-02-06 10:42:50 +01:00
gtk.supp gtk.supp: Update 2020-05-05 08:20:10 +02:00
make-pot make-pot: Make it executable 2017-08-15 16:30:14 +02:00
meson_options.txt gtksearchengine: Add tracker3 search engine 2020-05-19 22:05:07 +02:00
meson.build Clarify document 2020-06-18 17:36:44 +01:00
NEWS NEWS: Updates 2020-06-05 22:50:30 -04:00
NEWS.pre-1.0 Split NEWS 2018-01-10 19:06:45 -05:00
NEWS.pre-2.0 Split NEWS 2018-01-10 19:06:45 -05:00
NEWS.pre-3.0 Split NEWS 2018-01-10 19:06:45 -05:00
README.md docs: Link the license file from the README 2020-04-29 12:49:35 +01:00

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 free software and part of the GNU Project. However, 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.

The official download location

The official web site

The official developers blog

Discussion forum

Nightly documentation can be found at

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
  • atk-bridge-2.0

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

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.

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.