The QStatusBar class provides a horizontal bar suitable for presenting status information.| doc.qt.io
The QMainWindow class provides a main application window.| doc.qt.io
The QDockWidget class provides a widget that can be docked inside a QMainWindow or floated as a top-level window on the desktop.| doc.qt.io
The QDialog class is the base class of dialog windows.| doc.qt.io
The QToolBar class provides a movable panel that contains a set of controls.| doc.qt.io
The QMenuBar class provides a horizontal menu bar.| doc.qt.io
The QPoint class defines a point in the plane using integer precision.| doc.qt.io
The QWidget class is the base class of all user interface objects.| doc.qt.io
The Qt namespace contains miscellaneous identifiers used throughout the Qt library.| doc.qt.io