These classes are used to organize and group GUI primitives into more complex applications or dialogs.
| QButtonGroup | The QButtonGroup class provides a container to organize groups of button widgets. |
| QGroupBox | The QGroupBox widget provides a group box frame with a title. |
| QSplitter | The QSplitter class implements a splitter widget. |
| QSplitterHandle | The QSplitterHandle class provides handle functionality of the splitter. |
| QStackedWidget | The QStackedWidget class provides a stack of widgets where only one widget is visible at a time. |
| QTabWidget | The QTabWidget class provides a stack of tabbed widgets. |