Next: X System Concepts and definitions Up: X Window Principles Previous: X Window Principles


All forms of display of information in X are bit-mapped which means that every pixel on the screen is individually controllable.

Therefore we can draw pictures as well as using text (but we do require high quality monitors).

X like most other windowing systems divides the screen into various parts that control input and output. Each part is called a window.

Each window can act as a standard terminal (e.g. we have used Xterm already).

However windows can have other uses such as display of graphics, input from mouse etc.

Not all applications need to consist of a single window.

We can have many windows associated with different parts of one application.

Each subwindow is called a child and are only visible and accessible within the confines of its parent control window.

Note: the background window is the root window - All other windows are children of the root.
Tue May 24 16:52:56 BST 1994