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Xlib (also known as libX11) is an X Window System protocol client library written in the C programming language. It contains functions for interacting with an X server . These functions allow programmers to write programs without knowing the details of the X protocol .
X Toolkit Intrinsics (also known as Xt, for X toolkit) is a library that implements an API to facilitate the development of programs with a graphical user interface (GUI) for the X Window System.
Xlib/XCB uses the protocol layer of Xlib, but replaces the Xlib transport layer with XCB, and provides access to the underlying XCB connection for direct use of XCB. Xlib/XCB allows an application to open a single connection to the X display server and use both XCB and Xlib, possibly through a mixture of libraries designed for one or the other.
X11R6.2 is the tag for a subset of X11R6.3 (Broadway) with the only new features over R6.1 being XPrint and the Xlib implementation of vertical writing and user-defined character support. [60] Broadway was the code name for running X applications on a web browser via a browser plugin and Low Bandwidth X. [61] X11R6.4
Beside Xlib, the XCB library operates more closely to X protocol. In particular, most clients use libraries such as Xaw, Motif, GTK+, or Qt which in turn use Xlib for interacting with the server. Qt switched from Xlib to XCB with the 5.0 release, but client programs were almost entirely unaffected by this change.
Screenshot of plan, an application that uses the Motif toolkit.The "chiseled" look of Motif is clearly visible. Motif was created by the Open Software Foundation (OSF) to be a standard graphical user interface for Unix platforms. [2]
This is an incomplete list of notable applications (apps) that run on iOS where source code is available under a free software/open-source software license.Note however that much of this software is dual-licensed for non-free distribution via the iOS app store; for example, GPL licenses are not compatible with the app store.
A library written in one programming language may be used in another language if bindings are written; Cairo has a range of bindings for various languages including C++, C# and other CLI languages, Delphi, Eiffel, Fortran, Factor, Harbour, Haskell, Julia, Lua, Perl, PHP, Python, Ruby, Rust, Scheme, Smalltalk and several others like Gambas (Visual Basic like).