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class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/mouseeventflag">MouseEventFlag</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/mouseeventsource">MouseEventSource</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/movement">Movement</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/moviestate">MovieState</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/nativegesturetype">NativeGestureType</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/navigationmode">NavigationMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/option">Option</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/orientation">Orientation</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/parsingmode">ParsingMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/penstyle">PenStyle</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qclipboardmode">QClipboardMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qfontcapitalization">QFontCapitalization</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qfontstretch">QFontStretch</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qfontweight">QFontWeight</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qiconmode">QIconMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qiconstate">QIconState</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qmessageboxicon">QMessageBoxIcon</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qprogressbardirection">QProgressBarDirection</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qsettingsformat">QSettingsFormat</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qsettingsscope">QSettingsScope</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qstylepixelmetric">QStylePixelMetric</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qsystemtrayiconactivationreason">QSystemTrayIconActivationReason</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/qtextoptionwrapmode">QTextOptionWrapMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/renderhint">RenderHint</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/resizemode">ResizeMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/screenorientation">ScreenOrientation</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/scrollbarpolicy">ScrollBarPolicy</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/scrollhint">ScrollHint</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/scrollmode">ScrollMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/scrollphase">ScrollPhase</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/selectionbehavior">SelectionBehavior</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/selectionmode">SelectionMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sequenceformat">SequenceFormat</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sequencematch">SequenceMatch</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/shadow">Shadow</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/shape">Shape</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/shortcutcontext">ShortcutContext</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sizeadjustpolicy">SizeAdjustPolicy</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sizehint">SizeHint</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sizemode">SizeMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/slideraction">SliderAction</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/sortorder">SortOrder</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/steptype">StepType</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/systemfont">SystemFont</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/tabfocusbehavior">TabFocusBehavior</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/tabposition">TabPosition</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/textelidemode">TextElideMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/textflag">TextFlag</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/textformat">TextFormat</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/textinteractionflag">TextInteractionFlag</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/tickposition">TickPosition</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/tilerule">TileRule</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/timespec">TimeSpec</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/timertype">TimerType</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/toolbararea">ToolBarArea</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/toolbuttonpopupmode">ToolButtonPopupMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/toolbuttonstyle">ToolButtonStyle</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/touchpointstate">TouchPointState</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/transformationmode">TransformationMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/uieffect">UIEffect</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/verticalheaderformat">VerticalHeaderFormat</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/viewmode">ViewMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/whitespacemode">WhiteSpaceMode</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/widgetattribute">WidgetAttribute</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/widgeteventtypes">WidgetEventTypes</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/windowframesection">WindowFrameSection</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/windowmodality">WindowModality</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/windowstate">WindowState</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/windowtype">WindowType</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/enums/writingsystem">WritingSystem</a></li></ul></li><li class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#!">Interfaces</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qabstractbuttonsignals">QAbstractButtonSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qabstractitemviewsignals">QAbstractItemViewSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qabstractslidersignals">QAbstractSliderSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qabstractspinboxsignals">QAbstractSpinBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qactionsignals">QActionSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qbuttongroupsignals">QButtonGroupSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qcalendarwidgetsignals">QCalendarWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qcheckboxsignals">QCheckBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qcomboboxsignals">QComboBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qdatetimeeditsignals">QDateTimeEditSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qdialogsignals">QDialogSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qfiledialogsignals">QFileDialogSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qgroupboxsignals">QGroupBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qinputdialogsignals">QInputDialogSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qlabelsignals">QLabelSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qlineeditsignals">QLineEditSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qlistwidgetsignals">QListWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qmessageboxsignals">QMessageBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qmoviesignals">QMovieSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qobjectsignals">QObjectSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qplaintexteditsignals">QPlainTextEditSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qprogressbarsignals">QProgressBarSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qshortcutsignals">QShortcutSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qspinboxsignals">QSpinBoxSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qstackedwidgetsignals">QStackedWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qstatusbarsignals">QStatusBarSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qsystemtrayiconsignals">QSystemTrayIconSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qtabwidgetsignals">QTabWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qtablewidgetsignals">QTableWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qtoolbuttonsignals">QToolButtonSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qtreewidgetsignals">QTreeWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/qwidgetsignals">QWidgetSignals</a></li><li class="menu__list-item"><a class="menu__link" href="/docs/api/generated/interfaces/range">Range</a></li></ul></li><li class="menu__list-item menu__list-item--collapsed"><a class="menu__link menu__link--sublist" href="#!">Others</a><ul class="menu__list"><li class="menu__list-item"><a class="menu__link" href="/docs/api/manual/process">process</a></li></ul></li></ul></div></div></div><main class="docMainContainer_FFX1"><div class="padding-vert--lg"><div class="container"><div class="row"><div class="col docItemCol_2GOA"><div class="docItemContainer_2cwg"><article><header><h1 class="docTitle_1vWb">EventWidget</h1></header><div class="markdown"><blockquote><p>Abstract class that adds event handling support to all widgets.</p></blockquote><p>*This class implements an event emitter and merges it with Qt's event and signal system. It allows us to register and unregister event and signal listener at will from javascript**</p><p><code>EventWidget</code> is an abstract class and hence no instances of the same should be created. It exists so that we can add event handling functionalities to all widget's easily. This is an internal class.</p><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="example"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#example" title="Direct link to heading">#</a>Example</h3><div class="mdxCodeBlock_iHAB"><pre class="prism-code language-javascript codeBlock_19pQ"><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button><code class="codeBlockLines_2n9r" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"> </span><span class="token maybe-class-name">QWidget</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token maybe-class-name">QWidgetSignals</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token maybe-class-name">WidgetEventTypes</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token plain"> </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token function" style="color:rgb(130, 170, 255)">require</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"@nodegui/nodegui"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
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</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> view </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">new</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">QWidget</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// You either listen for a widget's signal</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">view</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">addEventListener</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">'windowTitleChanged'</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:rgb(137, 221, 255)">=></span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token console class-name" style="color:rgb(255, 203, 107)">console</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">log</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"window title changed"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
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</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// or you can listen for an event</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain" style="display:inline-block">
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</span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">view</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">addEventListener</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token maybe-class-name">WidgetEventTypes</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token property-access maybe-class-name">MouseMove</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token plain"> </span><span class="token arrow operator" style="color:rgb(137, 221, 255)">=></span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(199, 146, 234)">{</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token console class-name" style="color:rgb(255, 203, 107)">console</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">log</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"mouse moved"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token punctuation" style="color:rgb(199, 146, 234)">}</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span></div></code></pre></div><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="type-parameters"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#type-parameters" title="Direct link to heading">#</a>Type parameters</h2><p>▪ <strong>Signals</strong>: <em>object</em></p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="hierarchy"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#hierarchy" title="Direct link to heading">#</a>Hierarchy</h2><ul><li><p><a href="/docs/api/generated/classes/component">Component</a></p><p>↳ <strong>EventWidget</strong></p><p>↳ <a href="/docs/api/generated/classes/nodeobject">NodeObject</a></p></li></ul><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="index"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#index" title="Direct link to heading">#</a>Index</h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="constructors"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#constructors" title="Direct link to heading">#</a>Constructors</h3><ul><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#constructor">constructor</a></li></ul><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="properties"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#properties" title="Direct link to heading">#</a>Properties</h3><ul><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#abstract-native">native</a></li><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#nodechildren">nodeChildren</a></li><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#optional-nodeparent">nodeParent</a></li></ul><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="methods"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#methods" title="Direct link to heading">#</a>Methods</h3><ul><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#addeventlistener">addEventListener</a></li><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#removeeventlistener">removeEventListener</a></li><li><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget#setnodeparent">setNodeParent</a></li></ul><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="constructors-1"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#constructors-1" title="Direct link to heading">#</a>Constructors</h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="constructor"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#constructor" title="Direct link to heading">#</a>constructor</h3><p>+ <strong>new EventWidget</strong>(<code>native</code>: <a href="/docs/api/generated/globals#nativeelement">NativeElement</a>): <em><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget">EventWidget</a></em></p><p><em>Overrides <a href="/docs/api/generated/classes/component">Component</a>.<a href="/docs/api/generated/classes/component#constructor">constructor</a></em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th></tr></thead><tbody><tr><td><code>native</code></td><td><a href="/docs/api/generated/globals#nativeelement">NativeElement</a></td></tr></tbody></table><p><strong>Returns:</strong> <em><a aria-current="page" class="active" href="/docs/api/generated/classes/eventwidget">EventWidget</a></em></p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="properties-1"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#properties-1" title="Direct link to heading">#</a>Properties</h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="abstract-native"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#abstract-native" title="Direct link to heading">#</a><code>Abstract</code> native</h3><p>• <strong>native</strong>: <em><a href="/docs/api/generated/globals#nativeelement">NativeElement</a></em></p><p><em>Inherited from <a href="/docs/api/generated/classes/component">Component</a>.<a href="/docs/api/generated/classes/component#abstract-native">native</a></em></p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="nodechildren"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#nodechildren" title="Direct link to heading">#</a>nodeChildren</h3><p>• <strong>nodeChildren</strong>: <em>Set‹<a href="/docs/api/generated/classes/component">Component</a>›</em></p><p><em>Inherited from <a href="/docs/api/generated/classes/component">Component</a>.<a href="/docs/api/generated/classes/component#nodechildren">nodeChildren</a></em></p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="optional-nodeparent"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#optional-nodeparent" title="Direct link to heading">#</a><code>Optional</code> nodeParent</h3><p>• <strong>nodeParent</strong>? : <em><a href="/docs/api/generated/classes/component">Component</a></em></p><p><em>Inherited from <a href="/docs/api/generated/classes/component">Component</a>.<a href="/docs/api/generated/classes/component#optional-nodeparent">nodeParent</a></em></p><h2><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="methods-1"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#methods-1" title="Direct link to heading">#</a>Methods</h2><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="addeventlistener"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#addeventlistener" title="Direct link to heading">#</a>addEventListener</h3><p>▸ <strong>addEventListener</strong><<strong>SignalType</strong>>(<code>signalType</code>: SignalType, <code>callback</code>: Signals[SignalType]): <em>void</em></p><p><strong>Type parameters:</strong></p><p>▪ <strong>SignalType</strong>: <em>keyof Signals</em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th><th>Description</th></tr></thead><tbody><tr><td><code>signalType</code></td><td>SignalType</td><td>SignalType is a signal from the widgets signals interface.</td></tr><tr><td><code>callback</code></td><td>Signals[SignalType]</td><td>Corresponding callback for the signal as mentioned in the widget's signal interface</td></tr></tbody></table><p><strong>Returns:</strong> <em>void</em></p><p>void</p><p>For example in the case of QPushButton:</p><div class="mdxCodeBlock_iHAB"><pre class="prism-code language-js codeBlock_19pQ"><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button><code class="codeBlockLines_2n9r" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> button </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">new</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">QPushButton</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">button</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">addEventListener</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">'clicked'</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token parameter">checked</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token arrow operator" style="color:rgb(137, 221, 255)">=></span><span class="token console class-name" style="color:rgb(255, 203, 107)">console</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">log</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"clicked"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain"></span><span class="token comment" style="color:rgb(105, 112, 152);font-style:italic">// here clicked is a value from QPushButtonSignals interface</span></div></code></pre></div><p>▸ <strong>addEventListener</strong>(<code>eventType</code>: <a href="/docs/api/generated/enums/widgeteventtypes">WidgetEventTypes</a>, <code>callback</code>: function): <em>void</em></p><p><strong>Parameters:</strong></p><p>▪ <strong>eventType</strong>: <em><a href="/docs/api/generated/enums/widgeteventtypes">WidgetEventTypes</a></em></p><p>▪ <strong>callback</strong>: <em>function</em></p><p>For example in the case of QPushButton:</p><div class="mdxCodeBlock_iHAB"><pre class="prism-code language-js codeBlock_19pQ"><button type="button" aria-label="Copy code to clipboard" class="copyButton_1BYj">Copy</button><code class="codeBlockLines_2n9r" style="color:#bfc7d5;background-color:#292d3e"><div class="token-line" style="color:#bfc7d5"><span class="token keyword" style="font-style:italic">const</span><span class="token plain"> button </span><span class="token operator" style="color:rgb(137, 221, 255)">=</span><span class="token plain"> </span><span class="token keyword" style="font-style:italic">new</span><span class="token plain"> </span><span class="token class-name" style="color:rgb(255, 203, 107)">QPushButton</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span><span class="token plain"></span></div><div class="token-line" style="color:#bfc7d5"><span class="token plain">button</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">addEventListener</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token maybe-class-name">WidgetEventTypes</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token property-access maybe-class-name">HoverEnter</span><span class="token punctuation" style="color:rgb(199, 146, 234)">,</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token arrow operator" style="color:rgb(137, 221, 255)">=></span><span class="token console class-name" style="color:rgb(255, 203, 107)">console</span><span class="token punctuation" style="color:rgb(199, 146, 234)">.</span><span class="token method function property-access" style="color:rgb(130, 170, 255)">log</span><span class="token punctuation" style="color:rgb(199, 146, 234)">(</span><span class="token string" style="color:rgb(195, 232, 141)">"hovered"</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">)</span><span class="token punctuation" style="color:rgb(199, 146, 234)">;</span></div></code></pre></div><p>▸ (<code>event?</code>: <a href="/docs/api/generated/globals#nativerawpointer">NativeRawPointer</a>‹"QEvent"›): <em>void</em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th></tr></thead><tbody><tr><td><code>event?</code></td><td><a href="/docs/api/generated/globals#nativerawpointer">NativeRawPointer</a>‹"QEvent"›</td></tr></tbody></table><p><strong>Returns:</strong> <em>void</em></p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="removeeventlistener"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#removeeventlistener" title="Direct link to heading">#</a>removeEventListener</h3><p>▸ <strong>removeEventListener</strong><<strong>SignalType</strong>>(<code>signalType</code>: SignalType, <code>callback</code>: Signals[SignalType]): <em>void</em></p><p><strong>Type parameters:</strong></p><p>▪ <strong>SignalType</strong>: <em>keyof Signals</em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th></tr></thead><tbody><tr><td><code>signalType</code></td><td>SignalType</td></tr><tr><td><code>callback</code></td><td>Signals[SignalType]</td></tr></tbody></table><p><strong>Returns:</strong> <em>void</em></p><p>▸ <strong>removeEventListener</strong>(<code>eventType</code>: <a href="/docs/api/generated/enums/widgeteventtypes">WidgetEventTypes</a>, <code>callback</code>: function): <em>void</em></p><p><strong>Parameters:</strong></p><p>▪ <strong>eventType</strong>: <em><a href="/docs/api/generated/enums/widgeteventtypes">WidgetEventTypes</a></em></p><p>▪ <strong>callback</strong>: <em>function</em></p><p>▸ (<code>event?</code>: <a href="/docs/api/generated/globals#nativerawpointer">NativeRawPointer</a>‹"QEvent"›): <em>void</em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th></tr></thead><tbody><tr><td><code>event?</code></td><td><a href="/docs/api/generated/globals#nativerawpointer">NativeRawPointer</a>‹"QEvent"›</td></tr></tbody></table><p><strong>Returns:</strong> <em>void</em></p><hr><h3><a aria-hidden="true" tabindex="-1" class="anchor enhancedAnchor_ZqCz" id="setnodeparent"></a><a aria-hidden="true" tabindex="-1" class="hash-link" href="#setnodeparent" title="Direct link to heading">#</a>setNodeParent</h3><p>▸ <strong>setNodeParent</strong>(<code>parent?</code>: <a href="/docs/api/generated/classes/component">Component</a>): <em>void</em></p><p><em>Inherited from <a href="/docs/api/generated/classes/component">Component</a>.<a href="/docs/api/generated/classes/component#setnodeparent">setNodeParent</a></em></p><p><strong>Parameters:</strong></p><table><thead><tr><th>Name</th><th>Type</th></tr></thead><tbody><tr><td><code>parent?</code></td><td><a href="/docs/api/generated/classes/component">Component</a></td></tr></tbody></table><p><strong>Returns:</strong> <em>void</em></p></div></article><div class="margin-vert--xl"><div class="row"><div class="col"><a href="https://github.com/nodegui/nodegui/edit/master/website/docs/api/generated/classes/eventwidget.md" target="_blank" rel="noreferrer noopener"><svg fill="currentColor" height="1.2em" width="1.2em" preserveAspectRatio="xMidYMid meet" viewBox="0 0 40 40" style="margin-right:0.3em;vertical-align:sub"><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"></path></g></svg>Edit this page</a></div></div></div><div class="margin-vert--lg"><nav class="pagination-nav"><div class="pagination-nav__item"><a class="pagination-nav__link" href="/docs/api/generated/classes/component"><h5 class="pagination-nav__link--sublabel">Previous</h5><h4 class="pagination-nav__link--label">« Component</h4></a></div><div class="pagination-nav__item pagination-nav__item--next"><a class="pagination-nav__link" href="/docs/api/generated/classes/flexlayout"><h5 class="pagination-nav__link--sublabel">Next</h5><h4 class="pagination-nav__link--label">FlexLayout »</h4></a></div></nav></div></div></div><div class="col col--3"><div class="tableOfContents_TbNY"><ul class="contents contents__left-border"><li><a href="#example" class="contents__link">Example</a></li><li><a href="#type-parameters" class="contents__link">Type parameters</a></li><li><a href="#hierarchy" class="contents__link">Hierarchy</a></li><li><a href="#index" class="contents__link">Index</a><ul><li><a href="#constructors" class="contents__link">Constructors</a></li><li><a href="#properties" class="contents__link">Properties</a></li><li><a href="#methods" class="contents__link">Methods</a></li></ul></li><li><a href="#constructors-1" class="contents__link">Constructors</a><ul><li><a href="#constructor" class="contents__link">constructor</a></li></ul></li><li><a href="#properties-1" class="contents__link">Properties</a><ul><li><a href="#abstract-native" class="contents__link"><code>Abstract</code> native</a></li><li><a href="#nodechildren" class="contents__link">nodeChildren</a></li><li><a href="#optional-nodeparent" class="contents__link"><code>Optional</code> nodeParent</a></li></ul></li><li><a href="#methods-1" class="contents__link">Methods</a><ul><li><a href="#addeventlistener" class="contents__link">addEventListener</a></li><li><a href="#removeeventlistener" class="contents__link">removeEventListener</a></li><li><a href="#setnodeparent" class="contents__link">setNodeParent</a></li></ul></li></ul></div></div></div></div></div></main></div></div><footer class="footer 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