GNU Info

(gdk.info)Overview

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What is GDK?
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   GDK is designed as a wrapper library that lies on top of Xlib. It
performs many common and desired operations for a programmer instead of
the programmer having to explicitly ask for such functionality from
Xlib directly. For example, GDK provides a common interface to both
regular and shared memory XImage types. By doing so, an application can
nearly transparently use the fastest image type available. GDK also
provides routines for determining the best available color depth and
the best available visual which is not always the default visual for a
screen.