View System concepts

Put simply, a view is an object that can render itself on a display device. The View System is a framework that connects views to the display device with which the user interacts.

The View System uses features of the Input System to distribute mouse and keyboard events to the views on the display. Displaying views on the screen and receiving user input, the View System provides primitive user interface features. The higher-level GUI Application framework builds on the View System to provide an extensible set of standard user interface elements.

Views and the View System
Single-threaded concurrency model
Handling user input
Drawing
Managing multiple threads

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