GTK+ 2.20.0 released

GTK+ 2.20.0 is now available for download at:

sha256 sums:
8ea7e11ff88e9a8867b7d9221d40a3bfce5c648ce27cd6bac422ff8f6cca414d  gtk
273b134bafa41ecc96d7c3807637503db3f5fbc7accb23a4a92063a713dc0540  gtk

Release notes are available at:

What is 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 tools to
complete application suites.

GTK+ has been designed from the ground up to support a range
of languages, not only C/C++. Using GTK+ from languages such
as Perl and Python (especially in combination with the Glade
GUI builder) provides an effective method of rapid application

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. GTK+ is the
only 100% free-of-cost open source industrial-strength GUI
toolkit available today.

Since its origins as the toolkit for the GNU Image
Manipulation Program (GIMP), GTK+ has been used in a wide
range of software. Notably, GTK+ is the foundation of the
GNOME desktop; GTK+ 2.20 will be incorporated into version
2.30 of the GNOME desktop.

What's new in GTK+ 2.20

GTK+ 2.20 adds new functionality while maintaining source and binary
compatibility with GTK+ 2.18. Highlights of new features and
improvements in GTK+ 2.20 are:

Noteworthy new APIs

GtkSpinner, GtkCellRendererSpinner

 - A new widget that renders a 'spinner' animation to indicate
   ongoing activity. The corresponding cell renderer renders the
   same animation inside a treeview


 - A new toplevel container widget to manage offscreen rendering
   of child widgets

Changes in GtkNotebook

 - GtkNotebook allows to show 'action widgets' in the space that
   is not occupied by tabs. This functionality is also available
   in GtkBuilder via the 'action-start' and 'action-end' child types.

Changes in the file chooser

 - GtkFileSystemModel has been reimplemented, for major speedups
   and simplifications.

Changes in keyboard handling

 - The compose sequences understood by the builtin input method
   have been synced with, and the additional sequences have
   been rationalized

 - Mnemonic underlines can now optionally be hidden until the Alt
   key is pressed, this can be turned on with the gtk-auto-mnemonics

 - The Super, Meta and Hyper modifiers are working more reliably
   in keyboard accelerators.

GDK changes

 - There is a new function to get the 'primary' monitor in multi-monitor
   setups: gdk_screen_get_primary_monitory.

gdk-pixbuf changes

 - Embedded color profiles in png and tiff images can be stored
   and retrieved

 - Support for the QTIF image format has been added

Win32 changes

 - XP themes have been disabled since they don't work

OS X changes

 - GTK+ uses standard Mac keyboard shortcuts (Cmd-X/Cmd-C instead of
   Ctrl-X/Ctrl-C, etc)

 - The handling of multi-monitor setups has been greatly improved

Introspection support

 - Introspection data is now included in GTK+ itself. As a consequence,
   a dependency on gobject-introspection has been added

For more details and lists of fixed bugs, see the
announcements for the 2.19.x development releases:

Where to get more information about GTK+

Information about GTK+ including links to documentation can be
found at:

An installation guide for GTK+ 2.x is found at:

Common questions:


GTK+ is a large project and relies on voluntary contributions.
We are actively searching for new contributors in various areas
and invite everyone to help project development.
If you are willing to participate, please subscribe to the project
mailing lists to offer your help and read over our list of vacant
project tasks:

The GTK+ Team:

 Jonathan Blandford, Hans Breuer, Kristian Rietveld,
 Matthias Clasen, Tim Janik, Tor Lillqvist, Federico Mena Quintero,
 Søren Sandmann, Manish Singh, and Owen Taylor

Thanks to everybody else who has contributed to this release:
Adrian Johnson, Alan Knowles, Alexander Larsson, Bastien Nocera,
Benjamin Otte, Carlo Bramini, Carlos Garcia Campos, Christian Dywan,
Christian Persch, Chris Wilson, Cody Russell, Colin Walters,
Damien Lespiau, Danielle Madeley, Dan Winship, Debarshi Ray,
Dom Lachowicz, Eitan Issacson, Emmanuele Bassi, Hib Eris,
Hiroyuki Ikezoe, Jan Arne Petersen, Javier Jardón, Johan Dahlin,
Juan A. Suarez Romero, Kevin Peng, Marek Kasik, Matt Barnes,
Matthew Barnes, Michael Natterer, Mike Emmel, Paolo Bonzini,
Paolo Borelli, Peter Hutterer, Rafal Luzynski, Richard Hughes,
Ryan Lortie, Sjoerd Simons, Stéphane Démurget, Sven Herzberg,
Thomas Wood, Tomas Bzatek, Tomeu Vizoso, Torsten Schoenfeld,
Tristan Van Berkom, Vincent Untz, Will Thompson, Xan Lopez,
Yevgen Muntyan

March 23, 2010
Matthias Clasen

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