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What is GTK+?
GTK+ is a highly usable, feature rich toolkit for creating
graphical user interfaces which boasts cross platform
compatibility and an easy to use API. GTK+ it is written in
C, but has bindings to
many other popular programming languages such as C++, Python
and C# among others. GTK+ is licensed under
the GNU
LGPL 2.1 allowing development of both free and
proprietary software with GTK+ without any license fees or
royalties.
Get an overview of
GTK+. Understand who started it, the basic architecture and
why we use the license we do.
GTK+ has been involved in
many projects and
some big platforms. To see what people think of GTK+ and
how it has been used in commercial
projects, read the success
stories...
To find out how more about what GTK+ can do for you, visit our
features page. If you want to
contribute, you are
more than welcome.
Recent news
GTK+ 2.18 stable release
September 25, 2009
GTK+ 2.18 adds new functionality while maintaining source and binary compatibility with GTK+ 2.16. Highlights of new features and improvements in GTK+ 2.18 are:
GtkInfoBar
A new widget to show a transient #8216;message area #8217; inside a content pane. The API is similar to GtkDialog and supports theming for different message types (warnings, errors, etc)
GtkBuilder
Scale marks can be specified in builder markup
GtkAssistant action widgets can be added in builder markup
GtkLabel
GtkLabel can show embedded URLs, much like SexyUrlLabe
GtkEntry
GtkEntry has been refactored to follow the model-view pattern, with GtkEntryBuffer as model. One intended use case for this is to support #8217;secure memory #8217; for password entries
File chooser
Backup files are hidden by default
GTK+ remembers the sorting state of the file list
File sizes are shown by default
The #8216;Create Folder #8217; button can be disabled with the the ::create-folders property
Printing support
GTK+ supports authentication against CUPS servers
A backend for the PAPI printing system has been added
The file and lpr backends can print multiple pages per sheet
The file backend can produce svg files
GTK+ supports printing an application-defined #8217;selection #8217; in addition to the usual page ranges
The print dialog can optinally include the page setup controls, avoiding the need for a separate page setup dialog in many situations
Theming support
The bullet character used in invisible entries can be set by themes with the ::invisible-char style property
The file chooser can show different icons for xdg user dirs. The icon names are folder-documents, folder-download, folder-music, folder-pictures, folder-publicshare, folder-templates and folder-video
The GtkInfoBar uses symbolic colors for theming its background color depending on the message type. The color names are info_fg_color, info_bg_color, warning_fg_color #8221;, warning_bg_color, etc.
GDK changes
GDK has been rewritten to use #8216;client-side windows #8217;. This means that GDK maintains its own window hierarchy and only uses X windows where it is necessary or explicitly requested. Some of the benefits of this change are
Reduced flicker
The ability to do transformed and animated rendering of widgets
Easier embedding of GTK+ widgets, e.g. into Clutter scene graphs
See gdk-demo for some simple examples of client-side windows in action. See the documentation for information about possible problems when moving to client-side windows.
For more details and lists of fixed bugs, see the
announcements for the 2.17.x development releases: 2.17.0, 2.17.1, 2.17.2, 2.17.3, 2.17.4, 2.17.5, 2.17.6, 2.17.8, 2.17.9, 2.17.10, 2.17.11
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GLib 2.22 Stable Release
September 23, 2009
GLib 2.22 is a stable release adding an incremental improvement in functionality over GLib 2.20 while maintaining binary and source compatibility.
Major new features include:
GArray, GPtrArray, GByteArray, GTree and GMappedFile can be reference counted.
GLib can be forced to reload the XDG user directory mapping.
The GLib mainloop supports per-thread default contexts.
GIO now provides types and methods for IP addresses and UNIX domain socket addresses.
GResolver provides asynchronous and cancellable APIs for resolving hostnames, reverse lookup of IP addresses and resolving SRV records.
Support for network IO has been added to GIO, including low-level socket API and high-level API for network connections and services.
GIOStream and its subclasses have gained support for read-write access.
GIO supports starting and stopping of drives, which can be used in connection with external hard disk enclosures, disk arrays, iSCSI devices, etc.
GIO supports user interaction during unmount and eject operations.
GIO can store and retrieve per-file metadata.
For more details and lists of fixed bugs, see the announcements of the 2.21.x development releases: 2.21.0, 2.21.1, 2.21.2, 2.21.3, 2.21.4, 2.21.5 and 2.21.6
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GTK+ 2.17.8 unstable release
August 17, 2009
This is a development release leading up to GTK+ 2.18.
Overview of Changes from GTK+ 2.17.7
Client-side windows
#8211; various fixes to expose handlings
fix memory leaks
Minor API additionsp
New setter as part of the GSEAL effort: gtk_widget_set_allocation
11 bugs fixed in this release!
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GTK 2.17.6 unstable release
July 27, 2009
This is a development release leading up to GTK+ 2.18.
Overview of Changes from GTK+ 2.17.5
Client-side windows:
Several optimizations, such as client-side tracking of viewable windows
Clipping for drawing pixbufs on windows has been fixed
Rendering to large subwindows has been fixed
Changes that are relevant for translators:
Markup has been removed from several strings
12 bugs fixed in this release!
See the original announcement for more info and downloads.
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GTK+ 2.16.5 stable release
July 22, 2009
This is a bug fix release in the stable 2.16 series.
Overview of Changes from GTK+ 2.16.4
Fix a side-effect introduced by the fix for bug 586330 that caused all stock buttons to loose their mnemonics.
4 bugs fixed in this release!
See the original announcement for more info and downloads.
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For older news, visit our archives.
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