How to create a simple layout of dock panes

This example shows how to create a simple docking application. The application contains the following dock panels:
- Toolbox represents a regular dock panel, docked to the left.
- Properties is an auto-hidden dock panel.
- Messages is a floating dock panel.
- Document 1 and Document 2 are two tab pages, representing the main region of the application.

The step-by-step tutorial on how this application was created is available at How to create a simple layout of dock panes. Please refer to it for more information.