Event Classes

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

For more information see the Event System page.

QActionEvent	Event that is generated when a QAction is added, removed, or changed
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
QEnterEvent	Contains parameters that describe an enter event
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
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
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
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