| QAction | Abstract user interface action that can be inserted into widgets | 
|---|
| QActionGroup | Groups actions together | 
|---|
| QDockWidget | Widget that can be docked inside a QMainWindow or floated as a top-level window on the desktop | 
|---|
| QMainWindow | Main application window | 
|---|
| QMdiArea | Area in which MDI windows are displayed | 
|---|
| QMdiSubWindow | Subwindow class for QMdiArea | 
|---|
| QMenu | Menu widget for use in menu bars, context menus, and other popup menus | 
|---|
| QMenuBar | Horizontal menu bar | 
|---|
| QSizeGrip | Resize handle for resizing top-level windows | 
|---|
| QStatusBar | Horizontal bar suitable for presenting status information | 
|---|
| QToolBar | Movable panel that contains a set of controls | 
|---|
| QWidgetAction | Extends QAction by an interface for inserting custom widgets into action based containers, such as toolbars | 
|---|