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Like tools such as whiptail and dialog, Zenity allows easy creation of GUIs, [2] though it has fewer features than more complex GUI-creation tools. [3]Other scripting languages such as Perl and Python can be used to construct full-scale GUI applications, but the zenity program enables a shell script to interact with a GUI user....
The GNOME Project, i.e. all the people involved with the development of the GNOME desktop environment, is the biggest contributor to GTK, and the GNOME Core Applications as well as the GNOME Games employ the newest GUI widgets from the cutting-edge version of GTK and demonstrates their capabilities.
Mutter can function as a standalone window manager for GNOME-like desktops, and serves as the primary window manager for the GNOME Shell, [5] which is an integral part of GNOME 3. Mutter is extensible with plug-ins, and supports numerous visual effects. GNOME Shell is written as a plug-in to Mutter.
The GTK-server provides a stream-oriented interface to GTK.If the GTK-server is compiled as a standalone program binary, it allows five different interfaces: standard input (stdin), first in, first out (FIFO) (), inter-process communication (IPC) (message queue), Transmission Control Protocol (TCP), or User Datagram Protocol (UDP).
GDK (GIMP Drawing Kit) is a library that acts as a wrapper around the low-level functions provided by the underlying windowing and graphics systems. GDK lies between the display server and the GTK library, handling basic rendering such as drawing primitives, raster graphics (bitmaps), cursors, fonts, as well as window events and drag-and-drop functionality.
GTK 2 is no longer supported, meaning some languages below do not have current GTK support. GObject (GOB) was initially written as a central component of GTK, but outsourced into GLib . GObject Introspection is a middleware layer between C libraries (using GObject) and language bindings, e.g. PyGObject uses this, while PyGTK does not.
GNOME Shell is the graphical shell of the GNOME desktop environment starting with version 3, [5] which was released on April 6, 2011. It provides basic functions like launching applications and switching between windows .
GLib provides advanced data structures, such as memory chunks, doubly and singly linked lists, hash tables, dynamic strings and string utilities, such as a lexical scanner, string chunks (groups of strings), dynamic arrays, balanced binary trees, N-ary trees, quarks (a two-way association of a string and a unique integer identifier), keyed data lists, relations, and tuples.