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XCB
XCB (''X protocol C-language Binding'') is a library implementing the client side of the X11 display server protocol. XCB is written in the C programming language and distributed under the MIT License. The project was started in 2001 by Bart Massey and aims to replace Xlib. Overview XCB was designed as a smaller, modernized replacement for Xlib, previously the primary C library for communicating with the X window system, coinciding with a more complete overhaul of the X implementation that took place during the early 2000s. The main goals of XCB are to: * reduce library size and complexity * provide direct access to the X11 protocol The required size reduction is achieved primarily by restricting XCB's scope to handling the X protocol and omitting Xlib functionality such as its extensive utility library, much of which saw little use by applications. This results in a factor thirty reduction of the compiled library size (as of 2004). Secondary goals include making the C in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xlib And XCB In The X Window System Graphics Stack
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. Few applications use Xlib directly; rather, they employ other libraries that use Xlib functions to provide widget toolkits: * X Toolkit Intrinsics (Xt) * Athena widget set (Xaw) * Motif * FLTK * GTK * Qt (X11 version) * Tk * SDL (Simple DirectMedia Layer) * SFML (Simple and Fast Multimedia Library) Xlib, which was first publicly released in September 1985, is used in GUIs for many Unix-like operating systems. A re-implementation of Xlib was introduced in 2007 using XCB. Data types The main types of data in Xlib are the Display structure and the types of the identifiers. Informally, a display is a physical or virtual device where graphical operations are done. The Display structure of the Xlib library ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xlib
Xlib (also known as libX11) is an X Window System protocol client library (computer science), library written in the C (programming language), C programming language. It contains subroutine, functions for interacting with an X Server (computing), server. These functions allow programmers to write programs without knowing the details of the X Window System protocols and architecture, X protocol. Few applications use Xlib directly; rather, they employ other libraries that use Xlib functions to provide widget toolkits: * X Toolkit Intrinsics (Xt) * X Athena Widgets, Athena widget set (Xaw) * Motif (software), Motif * FLTK * GTK * Qt (software), Qt (X11 version) * Tk (software), Tk * Simple DirectMedia Layer, SDL (Simple DirectMedia Layer) * Simple and Fast Multimedia Library, SFML (Simple and Fast Multimedia Library) Xlib, which was first publicly released in September 1985, is used in GUIs for many Unix-like operating systems. A re-implementation of Xlib was introduced in 2007 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X11 Display Server Protocol
The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X originated as part of Project Athena at Massachusetts Institute of Technology (MIT) in 1984. The X protocol has been at version 11 (hence "X11") since September 1987. The X.Org Foundation leads the X project, with the current reference implementation, X.Org Server, available as free and open-source software under the MIT License and similar permissive licenses. Purpose and abilities X is an architecture-independent system for remote graphical user interfaces and input device capabilities. Each person using a networked computer terminal, terminal has the ability to interact with the display with any type of user input device. In its standard distribution it is a complete, albeit simple, display and interface solution which delivers a standard widget toolkit, toolkit and protocol stack for building graphical user interfaces on most Unix-like operating syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freedesktop
freedesktop.org (fd.o), formerly X Desktop Group (XDG), is a project to work on interoperability and shared base technology for free-software desktop environments for the X Window System (X11) and Wayland on Linux and other Unix-like operating systems. Although freedesktop.org produces specifications for interoperability, it is not a formal standards body. The project was founded by Havoc Pennington, a GNOME developer working for Red Hat in March 2000. Widely used open-source X-based desktop projects, such as GNOME, KDE's Plasma Desktop, and Xfce, are collaborating with the freedesktop.org project. In 2006, the project released Portland 1.0 (xdg-utils), a set of common interfaces for desktop environments. freedesktop.org joined the X.Org Foundation in 2019. Some of the project's servers are hosted by Portland State University. Hosted projects freedesktop.org provides hosting for a number of relevant projects. These include: Windowing system and graphics Software relate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Interface Description Language
An interface description language or interface definition language (IDL) is a generic term for a language that lets a program or object written in one language communicate with another program written in an unknown language. IDLs are usually used to describe data types and interfaces in a language-independent way, for example, between those written in C++ and those written in Java. IDLs are commonly used in remote procedure call software. In these cases the machines at either end of the ''link'' may be using different operating systems and computer languages. IDLs offer a bridge between the two different systems. Software systems based on IDLs include Sun's ONC RPC, The Open Group's Distributed Computing Environment, IBM's System Object Model, the Object Management Group's CORBA (which implements OMG IDL, an IDL based on DCE/RPC) and Data Distribution Service, Mozilla's XPCOM, Microsoft's Microsoft RPC (which evolved into COM and DCOM), Facebook's Thrift and WSDL for W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X Window System Core Protocol
The X Window System core protocolRobert W. Scheifler and James Gettys: ''X Window System: Core and extension protocols, X version 11, releases 6 and 6.1'', Digital Press 1996, RFC 1013Grant EdwardsAn Introduction to X11 User Interfaces is the base protocol of the X Window System, which is a networked windowing system for bitmap displays used to build graphical user interfaces on Unix, Unix-like, and other operating systems. The X Window System is based on a client–server model: a single server controls the input/output hardware, such as the screen, the keyboard, and the mouse; all application programs act as clients, interacting with the user and with the other clients via the server. This interaction is regulated by the X Window System core protocol. Other protocols related to the X Window System exist, both built at the top of the X Window System core protocol or as separate protocols. In the X Window System core protocol, only four kinds of packets are sent, asynchro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freedesktop
freedesktop.org (fd.o), formerly X Desktop Group (XDG), is a project to work on interoperability and shared base technology for free-software desktop environments for the X Window System (X11) and Wayland on Linux and other Unix-like operating systems. Although freedesktop.org produces specifications for interoperability, it is not a formal standards body. The project was founded by Havoc Pennington, a GNOME developer working for Red Hat in March 2000. Widely used open-source X-based desktop projects, such as GNOME, KDE's Plasma Desktop, and Xfce, are collaborating with the freedesktop.org project. In 2006, the project released Portland 1.0 (xdg-utils), a set of common interfaces for desktop environments. freedesktop.org joined the X.Org Foundation in 2019. Some of the project's servers are hosted by Portland State University. Hosted projects freedesktop.org provides hosting for a number of relevant projects. These include: Windowing system and graphics Software relate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
X Window Core Protocol
The X Window System core protocolRobert W. Scheifler and James Gettys: ''X Window System: Core and extension protocols, X version 11, releases 6 and 6.1'', Digital Press 1996, RFC 1013Grant EdwardsAn Introduction to X11 User Interfaces is the base protocol of the X Window System, which is a networked windowing system for bitmap displays used to build graphical user interfaces on Unix, Unix-like, and other operating systems. The X Window System is based on a client–server model: a single server controls the input/output hardware, such as the screen, the keyboard, and the mouse; all application programs act as clients, interacting with the user and with the other clients via the server. This interaction is regulated by the X Window System core protocol. Other protocols related to the X Window System exist, both built at the top of the X Window System core protocol or as separate protocols. In the X Window System core protocol, only four kinds of packets are sent, asynchronously, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Application Binary Interface
An application binary interface (ABI) is an interface exposed by software that is defined for in-process machine code access. Often, the exposing software is a library, and the consumer is a program. An ABI is at a relatively low-level of abstraction. Interface compatibility depends on the target hardware and the software build toolchain. In contrast, an application programming interface (API) defines access in source code which is a relatively high-level, hardware-independent, and human-readable format. An API defines interface at the source code level, before compilation, whereas an ABI defines an interface to compiled code. API compatibility is generally the concern for system design and of the toolchain. However, a programmer may have to deal with an ABI directly when writing a program in a multiple languages or compilers. A complete ABI enables a program that supports an ABI to run without modification on multiple operating systems that provide the ABI. The targe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bitwise Operations In C
In the C programming language, operations can be performed on a bit level using bitwise operators. Bitwise operations are contrasted by byte-level operations which characterize the bitwise operators' logical counterparts, the AND, OR, NOT operators. Instead of performing on individual bits, byte-level operators perform on strings of eight bits (known as bytes) at a time. The reason for this is that a byte is normally the smallest unit of addressable memory (i.e. data with a unique memory address). This applies to bitwise operators as well, which means that even though they operate on only one bit at a time they cannot accept anything smaller than a byte as their input. All of these operators are also available in C++, and many C-family languages. Bitwise operators C provides six operators for bit manipulation. Regarded by many to be the authoritative reference on C. Bitwise AND & The bitwise AND operator is a single ampersand: &. It is just a representation of AND whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C (programming Language)
C (''pronounced'' '' – like the letter c'') is a general-purpose programming language. It was created in the 1970s by Dennis Ritchie and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted Central processing unit, CPUs. It has found lasting use in operating systems code (especially in Kernel (operating system), kernels), device drivers, and protocol stacks, but its use in application software has been decreasing. C is commonly used on computer architectures that range from the largest supercomputers to the smallest microcontrollers and embedded systems. A successor to the programming language B (programming language), B, C was originally developed at Bell Labs by Ritchie between 1972 and 1973 to construct utilities running on Unix. It was applied to re-implementing the kernel of the Unix operating system. During the 1980s, C gradually gained popularity. It has become one of the most widely used programming langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
