The QToolBar class provides a movable panel that contains a set of controls.| doc.qt.io
The QToolButton class provides a quick-access button to commands or options, usually used inside a QToolBar.| doc.qt.io
The QPushButton widget provides a command button.| doc.qt.io
The QAbstractButton class is the abstract base class of button widgets, providing functionality common to buttons.| doc.qt.io
The QIcon class provides scalable icons in different modes and states.| doc.qt.io
The QPixmap class is an off-screen image representation that can be used as a paint device.| doc.qt.io