Because of the limited space available, this chapter does not
show examples of Qt and GTK+ applications.
For more information about GTK+, visit the GTK+ Web site at www.gtk.org. You can
find information about the Qt framework at http://troll.no/.
Although Qt and GTK+ are the big hammers of Linux graphical development, there are many other
toolkits, frameworks, and libraries that you can use to develop GUI-based applications for Linux.
The following list, arranged alphabetically, describes some of the available toolkits. Most of these
toolkits and frameworks describe widget sets, which are implemented in one or more programming
libraries. Widget is the term applied to a user interface abstraction, such as a scrollbar or a
button, created using the toolkit.
Athena??”The Athena library was one of the earliest (think ancient) widget libraries
available for the X Window System. It is a thin layer of abstraction on top of raw Xlib
calls that makes it slightly less painful to create scrollbars, text entry boxes, and other
typical GUI elements. It is part of the standard X11 distribution.
3D Athena Toolkit??”The 3D Athena Toolkit is a 3D version of the original Athena
toolkit. It gives Athena a 3D look and is a considerable visual improvement over plain
vanilla Athena.
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