QEvent::Type

Member Type Documentation

enum QEvent::Type

This enum type defines the valid event types in Qt. The event types and the specialized classes for each type are as follows:

Constant	Value	Description
QEvent::None	0	Not an event.
QEvent::AccessibilityDescription	130	Used to query accessibility description texts (QAccessibleEvent).
QEvent::AccessibilityHelp	119	Used to query accessibility help texts (QAccessibleEvent).
QEvent::AccessibilityPrepare	86	Accessibility information is requested.
QEvent::ActionAdded	114	A new action has been added (QActionEvent).
QEvent::ActionChanged	113	An action has been changed (QActionEvent).
QEvent::ActionRemoved	115	An action has been removed (QActionEvent).
QEvent::ActivationChange	99	A widget's top-level window activation state has changed.
QEvent::ApplicationActivated	121	The application has been made available to the user.
QEvent::ApplicationDeactivated	122	The application has been suspended, and is unavailable to the user.
QEvent::ApplicationFontChange	36	The default application font has changed.
QEvent::ApplicationLayoutDirectionChange	37	The default application layout direction has changed.
QEvent::ApplicationPaletteChange	38	The default application palette has changed.
QEvent::ApplicationWindowIconChange	35	The application's icon has changed.
QEvent::ChildAdded	68	An object gets a child (QChildEvent).
QEvent::ChildPolished	69	A widget child gets polished (QChildEvent).
QEvent::ChildRemoved	71	An object loses a child (QChildEvent).
QEvent::Clipboard	40	The clipboard contents have changed (QClipboardEvent).
QEvent::Close	19	Widget was closed (QCloseEvent).
QEvent::ContextMenu	82	Context popup menu (QContextMenuEvent).
QEvent::DeferredDelete	52	The object will be deleted after it has cleaned up.
QEvent::DragEnter	60	The cursor enters a widget during a drag and drop operation (QDragEnterEvent).
QEvent::DragLeave	62	The cursor leaves a widget during a drag and drop operation (QDragLeaveEvent).
QEvent::DragMove	61	A drag and drop operation is in progress (QDragMoveEvent).
QEvent::Drop	63	A drag and drop operation is completed (QDropEvent).
QEvent::EnabledChange	98	Widget's enabled state has changed.
QEvent::Enter	10	Mouse enters widget's boundaries.
QEvent::EnterEditFocus	150	An editor widget gains focus for editing.
QEvent::EnterWhatsThisMode	124	Send to toplevel widgets when the application enters "What's This?" mode.
QEvent::FileOpen	116	File open request (QFileOpenEvent).
QEvent::FocusIn	8	Widget gains keyboard focus (QFocusEvent).
QEvent::FocusOut	9	Widget loses keyboard focus (QFocusEvent).
QEvent::FontChange	97	Widget's font has changed.
QEvent::GraphicsSceneContextMenu	159	Context popup menu over a graphics scene (QGraphicsSceneContextMenuEvent).
QEvent::GraphicsSceneDragEnter	164	The cursor enters a graphics scene during a drag and drop operation.
QEvent::GraphicsSceneDragLeave	166	The cursor leaves a graphics scene during a drag and drop operation.
QEvent::GraphicsSceneDragMove	165	A drag and drop operation is in progress over a scene.
QEvent::GraphicsSceneDrop	167	A drag and drop operation is completed over a scene.
QEvent::GraphicsSceneHelp	163	The user requests help for a graphics scene (QHelpEvent).
QEvent::GraphicsSceneHoverEnter	160	The mouse cursor enters a hover item in a graphics scene (QGraphicsSceneHoverEvent).
QEvent::GraphicsSceneHoverLeave	162	The mouse cursor leaves a hover item in a graphics scene (QGraphicsSceneHoverEvent).
QEvent::GraphicsSceneHoverMove	161	The mouse cursor moves inside a hover item in a graphics scene (QGraphicsSceneHoverEvent).
QEvent::GraphicsSceneMouseDoubleClick	158	Mouse press again (double click) in a graphics scene (QGraphicsSceneMouseEvent).
QEvent::GraphicsSceneMouseMove	155	Move mouse in a graphics scene (QGraphicsSceneMouseEvent).
QEvent::GraphicsSceneMousePress	156	Mouse press in a graphics scene (QGraphicsSceneMouseEvent).
QEvent::GraphicsSceneMouseRelease	157	Mouse release in a graphics scene (QGraphicsSceneMouseEvent).
QEvent::GraphicsSceneWheel	168	Mouse wheel rolled in a graphics scene (QGraphicsSceneWheelEvent).
QEvent::Hide	18	Widget was hidden (QHideEvent).
QEvent::HideToParent	27	A child widget has been hidden.
QEvent::HoverEnter	127	The mouse cursor enters a hover widget (QHoverEvent).
QEvent::HoverLeave	128	The mouse cursor leaves a hover widget (QHoverEvent).
QEvent::HoverMove	129	The mouse cursor moves inside a hover widget (QHoverEvent).
QEvent::IconDrag	96	The main icon of a window has been dragged away (QIconDragEvent).
QEvent::IconTextChange	101	Widget's icon text has been changed.
QEvent::InputMethod	83	An input method is being used (QInputMethodEvent).
QEvent::KeyPress	6	Key press (QKeyEvent).
QEvent::KeyRelease	7	Key release (QKeyEvent).
QEvent::LanguageChange	89	The application translation changed.
QEvent::LayoutDirectionChange	90	The direction of layouts changed.
QEvent::LayoutRequest	76	Widget layout needs to be redone.
QEvent::Leave	11	Mouse leaves widget's boundaries.
QEvent::LeaveEditFocus	151	An editor widget loses focus for editing.
QEvent::LeaveWhatsThisMode	125	Send to toplevel widgets when the application leaves "What's This?" mode.
QEvent::LocaleChange	88	The system locale has changed.
QEvent::MenubarUpdated	153	The window's menu bar has been updated.
QEvent::MetaCall	43	An asynchronous method invocation via QMetaObject::invokeMethod().
QEvent::ModifiedChange	102	Widgets modification state has been changed.
QEvent::MouseButtonDblClick	4	Mouse press again (QMouseEvent).
QEvent::MouseButtonPress	2	Mouse press (QMouseEvent).
QEvent::MouseButtonRelease	3	Mouse release (QMouseEvent).
QEvent::MouseMove	5	Mouse move (QMouseEvent).
QEvent::MouseTrackingChange	109	The mouse tracking state has changed.
QEvent::Move	13	Widget's position changed (QMoveEvent).
QEvent::Paint	12	Screen update necessary (QPaintEvent).
QEvent::PaletteChange	39	Palette of the widget changed.
QEvent::ParentAboutToChange	131	The widget parent is about to change.
QEvent::ParentChange	21	The widget parent has changed.
QEvent::Polish	75	The widget is polished.
QEvent::PolishRequest	74	The widget should be polished.
QEvent::QueryWhatsThis	123	The widget should accept the event if it has "What's This?" help.
QEvent::Resize	14	Widget's size changed (QResizeEvent).
QEvent::Shortcut	117	Key press in child for shortcut key handling (QShortcutEvent).
QEvent::ShortcutOverride	51	Key press in child, for overriding shortcut key handling (QKeyEvent).
QEvent::Show	17	Widget was shown on screen (QShowEvent).
QEvent::ShowToParent	26	A child widget has been shown.
QEvent::SockAct	50	Socket activated, used to implement QSocketNotifier.
QEvent::StatusTip	112	A status tip is requested (QStatusTipEvent).
QEvent::StyleChange	100	Widget's style has been changed.
QEvent::TabletMove	87	Wacom tablet move (QTabletEvent).
QEvent::TabletPress	92	Wacom tablet press (QTabletEvent).
QEvent::TabletRelease	93	Wacom tablet release (QTabletEvent).
QEvent::TabletEnterProximity	171	Wacom tablet enter proximity event (QTabletEvent), sent to QApplication.
QEvent::TabletLeaveProximity	172	Wacom tablet leave proximity event (QTabletEvent), sent to QApplication.
QEvent::Timer	1	Regular timer events (QTimerEvent).
QEvent::ToolBarChange	120	The toolbar button is toggled on Mac OS X.
QEvent::ToolTip	110	A tooltip was requested (QHelpEvent).
QEvent::UpdateLater	78	The widget should be queued to be repainted at a later time.
QEvent::UpdateRequest	77	The widget should be repainted.
QEvent::WhatsThis	111	The widget should reveal "What's This?" help (QHelpEvent).
QEvent::WhatsThisClicked	118	A link in a widget's "What's This?" help was clicked.
QEvent::Wheel	31	Mouse wheel rolled (QWheelEvent).
QEvent::WinEventAct	132	A Windows-specific activation event has occurred.
QEvent::WindowActivate	24	Window was activated.
QEvent::WindowBlocked	103	The window is blocked by a modal dialog.
QEvent::WindowDeactivate	25	Window was deactivated.
QEvent::WindowIconChange	34	The window's icon has changed.
QEvent::WindowStateChange	105	The window's state (minimized, maximized or full-screen) has changed (QWindowStateChangeEvent).
QEvent::WindowTitleChange	33	The window title has changed.
QEvent::WindowUnblocked	104	The window is unblocked after a modal dialog exited.
QEvent::ZOrderChange	126	The widget's z-order has changed. This event is never sent to top level windows.
QEvent::KeyboardLayoutChange	169	The keyboard layout has changed.
QEvent::DynamicPropertyChange	170	A dynamic property was added, changed or removed from the object.

User events should have values between User and MaxUser:

Constant	Value	Description
QEvent::User	1000	User-defined event.
QEvent::MaxUser	65535	Last user event ID.