- Qt 6.9
- Qt Core
- The Event System
- Event Classes
- Qt 6.9.3 Reference Documentation

The Event System ◦ Classes for string data

# Event Classes

These Qt Core classes are used to create and handle events.

For more information see the Event System page.

QAbstractEventDispatcher | Interface to manage Qt's event queue
QActionEvent | Event that is generated when a QAction is added, removed, or changed
QBasicTimer | Timer events for objects
QChildEvent | Contains event parameters for child object events
QChildWindowEvent | Contains event parameters for child window changes
QChronoTimer | Repetitive and single-shot timers
QCloseEvent | Contains parameters that describe a close event
QContextMenuEvent | Contains parameters that describe a context menu event
QDragEnterEvent | Event which is sent to a widget when a drag and drop action enters it
QDragLeaveEvent | Event that is sent to a widget when a drag and drop action leaves it
QDragMoveEvent | Event which is sent while a drag and drop action is in progress
QDropEvent | Event which is sent when a drag and drop action is completed
QDynamicPropertyChangeEvent | Contains event parameters for dynamic property change events
QEnterEvent | Contains parameters that describe an enter event
QEvent | The base class of all event classes. Event objects contain event parameters
QExposeEvent | Contains event parameters for expose events
QFileOpenEvent | Event that will be sent when there is a request to open a file or a URL
QFocusEvent | Contains event parameters for widget focus events
QGestureEvent | The description of triggered gestures
QHelpEvent | Event that is used to request helpful information about a particular point in a widget
QHideEvent | Event which is sent after a widget is hidden
QHoverEvent | Contains parameters that describe a mouse event
QIconDragEvent | Indicates that a main icon drag has begun
QInputEvent | The base class for events that describe user input
QInputMethodEvent | Parameters for input method events
QKeyEvent | Describes a key event
QMouseEvent | Contains parameters that describe a mouse event
QMoveEvent | Contains event parameters for move events
QNativeGestureEvent | Contains parameters that describe a gesture event
QPaintEvent | Contains event parameters for paint events
QPlatformSurfaceEvent | Used to notify about native platform surface events
QPointingDevice | Describes a device from which mouse, touch or tablet events originate
QPointingDeviceUniqueId | Identifies a unique object, such as a tagged token or stylus, which is used with a pointing device
QResizeEvent | Contains event parameters for resize events
QScrollEvent | Sent when scrolling
QScrollPrepareEvent | Sent in preparation of scrolling
QShortcut | Used to create keyboard shortcuts
QShortcutEvent | Event which is generated when the user presses a key combination
QShowEvent | Event that is sent when a widget is shown
QStatusTipEvent | Event that is used to show messages in a status bar
QTabletEvent | Contains parameters that describe a Tablet event
QTimer | Repetitive and single-shot timers
QTimerEvent | Contains parameters that describe a timer event
QTouchEvent | Contains parameters that describe a touch event
QWhatsThisClickedEvent | Event that can be used to handle hyperlinks in a "What's This?" text
QWheelEvent | Contains parameters that describe a wheel event
QWindowStateChangeEvent | The window state before a window state change