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<td >Qt 5.12</td><td ><a href="qtcore-index.html">Qt Core</a></td><td >Event Classes</td></tr></table><table class="buildversion"><tr>
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<h1 class="title">Event Classes</h1>
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<p>These <a href="qtcore-index.html">Qt Core</a> classes are used to create and handle events.</p>
<p>For more information see the <a href="eventsandfilters.html">Event System</a> page.</p>
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<tr class="odd topAlign"><td class="tblName"><p><a href="qabstracteventdispatcher.html">QAbstractEventDispatcher</a></p></td><td class="tblDescr"><p>Interface to manage Qt's event queue</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qactionevent.html">QActionEvent</a></p></td><td class="tblDescr"><p>Event that is generated when a QAction is added, removed, or changed</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qbasictimer.html">QBasicTimer</a></p></td><td class="tblDescr"><p>Timer events for objects</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qchildevent.html">QChildEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for child object events</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qcloseevent.html">QCloseEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a close event</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qcontextmenuevent.html">QContextMenuEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a context menu event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qdragenterevent.html">QDragEnterEvent</a></p></td><td class="tblDescr"><p>Event which is sent to a widget when a drag and drop action enters it</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qdragleaveevent.html">QDragLeaveEvent</a></p></td><td class="tblDescr"><p>Event that is sent to a widget when a drag and drop action leaves it</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qdragmoveevent.html">QDragMoveEvent</a></p></td><td class="tblDescr"><p>Event which is sent while a drag and drop action is in progress</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qdropevent.html">QDropEvent</a></p></td><td class="tblDescr"><p>Event which is sent when a drag and drop action is completed</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdynamicpropertychangeevent.html">QDynamicPropertyChangeEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for dynamic property change events</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qenterevent.html">QEnterEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe an enter event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qevent.html">QEvent</a></p></td><td class="tblDescr"><p>The base class of all event classes. Event objects contain event parameters</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qexposeevent.html">QExposeEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for expose events</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qfileopenevent.html">QFileOpenEvent</a></p></td><td class="tblDescr"><p>Event that will be sent when there is a request to open a file or a URL</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qfocusevent.html">QFocusEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for widget focus events</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtwidgets/qgestureevent.html">QGestureEvent</a></p></td><td class="tblDescr"><p>The description of triggered gestures</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qhelpevent.html">QHelpEvent</a></p></td><td class="tblDescr"><p>Event that is used to request helpful information about a particular point in a widget</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qhideevent.html">QHideEvent</a></p></td><td class="tblDescr"><p>Event which is sent after a widget is hidden</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qhoverevent.html">QHoverEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a mouse event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qicondragevent.html">QIconDragEvent</a></p></td><td class="tblDescr"><p>Indicates that a main icon drag has begun</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qinputevent.html">QInputEvent</a></p></td><td class="tblDescr"><p>The base class for events that describe user input</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qinputmethodevent.html">QInputMethodEvent</a></p></td><td class="tblDescr"><p>Parameters for input method events</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qkeyevent.html">QKeyEvent</a></p></td><td class="tblDescr"><p>Describes a key event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qmouseevent.html">QMouseEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a mouse event</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qmoveevent.html">QMoveEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for move events</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qnativegestureevent.html">QNativeGestureEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a gesture event</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qpaintevent.html">QPaintEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for paint events</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qplatformsurfaceevent.html">QPlatformSurfaceEvent</a></p></td><td class="tblDescr"><p>Used to notify about native platform surface events</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qpointingdeviceuniqueid.html">QPointingDeviceUniqueId</a></p></td><td class="tblDescr"><p>Identifies a unique object, such as a tagged token or stylus, which is used with a pointing device</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qresizeevent.html">QResizeEvent</a></p></td><td class="tblDescr"><p>Contains event parameters for resize events</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qscrollevent.html">QScrollEvent</a></p></td><td class="tblDescr"><p>Sent when scrolling</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qscrollprepareevent.html">QScrollPrepareEvent</a></p></td><td class="tblDescr"><p>Sent in preparation of scrolling</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtwidgets/qshortcut.html">QShortcut</a></p></td><td class="tblDescr"><p>Used to create keyboard shortcuts</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qshortcutevent.html">QShortcutEvent</a></p></td><td class="tblDescr"><p>Event which is generated when the user presses a key combination</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qshowevent.html">QShowEvent</a></p></td><td class="tblDescr"><p>Event that is sent when a widget is shown</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qstatustipevent.html">QStatusTipEvent</a></p></td><td class="tblDescr"><p>Event that is used to show messages in a status bar</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qtabletevent.html">QTabletEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a Tablet event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qtimer.html">QTimer</a></p></td><td class="tblDescr"><p>Repetitive and single-shot timers</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qtimerevent.html">QTimerEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a timer event</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qtouchevent.html">QTouchEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a touch event</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qwhatsthisclickedevent.html">QWhatsThisClickedEvent</a></p></td><td class="tblDescr"><p>Event that can be used to handle hyperlinks in a "What's This?" text</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="../qtgui/qwheelevent.html">QWheelEvent</a></p></td><td class="tblDescr"><p>Contains parameters that describe a wheel event</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtgui/qwindowstatechangeevent.html">QWindowStateChangeEvent</a></p></td><td class="tblDescr"><p>The window state before a window state change</p></td></tr>
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