Qt Widgets

1. Qt Widgets

   Module overview of widget classes.

2. Signals and slots

   connect, slots and the meta-object system.

3. Layout management

   Box, grid and form layouts.

4. Model/View programming

   Models, views, delegates and selection.

5. Event system

   Events, event filters and propagation.

6. Qt Designer

   UI files and form design.

7. Style sheets

   QSS selectors and customization.

8. Object model

   QObject, parent-child ownership and properties.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.