GUI

In short: A GUI (graphical user interface) is a graphical interface with windows, icons and menus.

In more detail: It replaces or complements the command line (command line). It is operated with mouse, touch or keyboard.

In Depth

Frameworks

Desktop: WPF, Qt, JavaFX, Swing. Web: HTML/CSS/JavaScript. Mobile: Android Views, SwiftUI.

Events

GUIs are event-driven: click, key press and window size trigger methods. See UI, UX, MVVM.

See also: UI, UX, WPF, MVVM