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GTK+ x64 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+ x64 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 development.

GTK+ x64 is free software and part of the GNU Project. However, the
licensing terms for GTK+x64 , the GNU LGPL, allow it to be used by all
developers, including those developing proprietary software, without
any license fees or royalties.

GTK+ x64 has been developed for over a decade to be able to deliver the enticing features and superb performance that it brings to your application development. GTK+ x64 is supported by a large community of developers and has core maintainers from companies such as Red Hat, Novell, Lanedo and Opened Hand.

GTK+ x64 caters for a number features that today's developers are looking for in a toolkit, they include:

* Native look and feel
* Theme support
* Thread safe
* Object orientated approach
* Internationalization
* Localization
* Accessibility
* Bidirectional text support (LTR/RTL, Left To Right/Right To Left)
* UTF8 support
* Documentation

GTK+ x64 has a comprehensive collection of core widgets which include:

* Windows (normal window or dialog, about and assistant dialogs)
* Displays (label, image, progress bar, status bar)
* Buttons and toggles (check buttons, radio buttons, toggle buttons and link buttons)
* Numerical (horizontal or vertical scales and spin buttons) and text data entry (with or without completion)
* Multi-line text editor
* Tree, list and icon grid viewer (with customizable renderers and model/view separation)
* Combo box (with or without an entry)
* Menus (with images, radio buttons and check items)
* Toolbars (with radio buttons, toggle buttons and menu buttons)
* UI Manager (creating menus and toolbars from XML)
* Selectors (color selection, file chooser, font selection)
* Layouts (tabulated widget, table widget, expander widget, frames, separators and more)
* Status icon (notification area on Linux, tray icon on Windows)
* Printing widgets
* Recently used documents (menu, dialog and manager)

GTK+ x64 is built on top of GLib. GLib provides the fundamental algorithmic language constructs commonly duplicated in applications. This library has features such as (this list is not a comprehensive list):

* Object and type system
* Main loop
* Dynamic loading of modules (i.e. plug-ins)
* Thread support
* Timer support
* Memory allocator
* Threaded Queues (synchronous and asynchronous)
* Lists (singly linked, doubly linked, double ended)
* Hash tables
* Arrays
* Trees (N-ary and binary balanced)
* String utilities and charset handling
* Lexical scanner and XML parser
* Base64 (encoding & decoding)