Windowing system

software that manages separately different parts of display screens

A windowing system is a computing term. It refers to a way a computer operating system (OS) displays computer programs on a computer screen. It is a type of graphical user interface (GUI) using windows, menus, and a pointer. Microsoft Windows is a popular OS that uses a windowing system.[1] Each window is an independent part of the screen and typically holds a program or dialog box.[2]

Typical elements of a window. The window decoration is either drawn by the window manager or by the client. The drawing of the content is the task of the client.


  1. Robin Webster, 'Opening Windows', PC Magazine, Vo. 3, No. 11 (June 12, 1984), p. 268
  2. J.B. Dixit, Computer Programming (New Delhi: Laxami Publications, 2007), pp. 43–44