]> for GTK+ &version; The latest version of this documentation can be found on-line at http://library.gnome.org/devel/gtk/unstable/. GTK+ is a library for creating graphical user interfaces. It works on many UNIX-like platforms, Windows, and on framebuffer devices. GTK+ is released under the GNU Library General Public License (GNU LGPL), which allows for flexible licensing of client applications. GTK+ has a C-based object-oriented architecture that allows for maximum flexibility. Bindings for other languages have been written, including C++, Objective-C, Guile/Scheme, Perl, Python, TOM, Ada95, Free Pascal, and Eiffel. GTK+ depends on the following libraries: GLib A general-purpose utility library, not specific to graphical user interfaces. GLib provides many useful data types, macros, type conversions, string utilities, file utilities, a main loop abstraction, and so on. GObject A library that provides a type system, a collection of fundamental types including an object type, a signal system. GIO A modern, easy-to-use VFS API including abstractions for files, drives, volumes, stream IO, as well as network programming and DBus communication. cairo Cairo is a 2D graphics library with support for multiple output devices. Pango Pango is a library for internationalized text handling. It centers around the #PangoLayout object, representing a paragraph of text. Pango provides the engine for #GtkTextView, #GtkLabel, #GtkEntry, and other widgets that display text. ATK ATK is the Accessibility Toolkit. It provides a set of generic interfaces allowing accessibility technologies to interact with a graphical user interface. For example, a screen reader uses ATK to discover the text in an interface and read it to blind users. GTK+ widgets have built-in support for accessibility using the ATK framework. GdkPixbuf This is a small library which allows you to create #GdkPixbuf ("pixel buffer") objects from image data or image files. Use a #GdkPixbuf in combination with #GtkImage to display images. GDK GDK is the abstraction layer that allows GTK+ to support multiple windowing systems. GDK provides drawing and window system facilities on X11, Windows, and the Linux framebuffer device. GTK+ The GTK+ library itself contains widgets, that is, GUI components such as #GtkButton or #GtkTextView. This part describes what you need to change in programs use older versions of GTK+ so that they can use the new features. It also mentions how to convert applications using widgets found in the libgnomeui library to use their counterparts in GTK+.