GTK

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. 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 . Information about your system. For instance: which version of GTK you are using what operating system and version what windowing system (X11 or Wayland) what graphics driver / mesa version for Linux, which distribution if you built GTK, the list of options used to configure the build 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. 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. The release notes for GTK are part of the migration guide in the API reference. See: 3.x release notes 4.x release notes