This is the list of examples in Qt's examples directory. The examples demonstrate Qt features in small, self-contained programs. They are not all designed to be impressive when you run them, but their source code is carefully written to show good Qt programming practices. You can launch any of these programs from the Examples and Demos Launcher application.
If you are new to Qt, you should probably start by going through the Tutorial before you have a look at the Application example.
In addition to the examples and the tutorial, Qt includes a selection of demos that deliberately show off Qt's features. You might want to look at these as well.
Еще один ценный источник примеров и объяснений возможностей Qt - это архив Qt Quarterly.
In the list below, examples marked with an asterisk (*) are fully documented. Eventually, all the examples will be fully documented, but sometimes we include an example before we have time to write about it, because someone might need it right now.
Перетаскивание (Drag and Drop)