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<td >Qt 5.9</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-module.html">C++ Classes</a></td><td >QGraphicsSceneHelpEvent</td></tr></table><table class="buildversion"><tr>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QGraphicsSceneHelpEvent Class</h1>
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<p>The <a href="qgraphicsscenehelpevent.html">QGraphicsSceneHelpEvent</a> class provides events when a tooltip is requested. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QGraphicsSceneHelpEvent></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += widgets</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 4.2</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Inherits:</td><td class="memItemRight bottomAlign"> <a href="qgraphicssceneevent.html">QGraphicsSceneEvent</a></td></tr></table></div><ul>
<li><a href="qgraphicsscenehelpevent-members.html">List of all members, including inherited members</a></li>
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<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenehelpevent.html#dtor.QGraphicsSceneHelpEvent">~QGraphicsSceneHelpEvent</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenehelpevent.html#scenePos">scenePos</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QPoint </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenehelpevent.html#screenPos">screenPos</a></b>() const</td></tr>
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<li class="fn">1 public function inherited from <a href="qgraphicssceneevent.html#public-functions">QGraphicsSceneEvent</a></li>
<li class="fn">6 public functions inherited from <a href="../qtcore/qevent.html#public-functions">QEvent</a></li>
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<li class="fn">1 property inherited from <a href="../qtcore/qevent.html#properties">QEvent</a></li>
<li class="fn">1 static public member inherited from <a href="../qtcore/qevent.html#static-public-members">QEvent</a></li>
<li class="fn">2 protected variables inherited from <a href="../qtcore/qevent.html#protected-variables">QEvent</a></li>
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<h2 id="details">Detailed Description</h2>
<p>The <a href="qgraphicsscenehelpevent.html">QGraphicsSceneHelpEvent</a> class provides events when a tooltip is requested.</p>
<p>When a <a href="qgraphicsview.html">QGraphicsView</a> receives a <a href="../qtcore/qevent.html">QEvent</a> of type <a href="../qtcore/qevent.html#Type-enum">QEvent::ToolTip</a>, it creates a <a href="qgraphicsscenehelpevent.html">QGraphicsSceneHelpEvent</a>, which is forwarded to the scene. You can set a tooltip on a <a href="qgraphicsitem.html">QGraphicsItem</a> with <a href="qgraphicsitem.html#setToolTip">setToolTip()</a>; by default <a href="qgraphicsscene.html">QGraphicsScene</a> displays the tooltip of the <a href="qgraphicsitem.html">QGraphicsItem</a> with the highest z-value (i.e, the top-most item) under the mouse position.</p>
<p><a href="qgraphicsview.html">QGraphicsView</a> does not forward events when <a href="qwhatsthis.html">"What's This"</a> and <a href="../qtgui/qstatustipevent.html">status tip</a> help is requested. If you need this, you can reimplement <a href="qgraphicsview.html#viewportEvent">QGraphicsView::viewportEvent</a>() and forward <a href="../qtgui/qstatustipevent.html">QStatusTipEvent</a> events and <a href="../qtcore/qevent.html">QEvents</a> of type <a href="../qtcore/qevent.html#Type-enum">QEvent::WhatsThis</a> to the scene.</p>
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<p><b>See also </b><a href="../qtcore/qevent.html">QEvent</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn" id="dtor.QGraphicsSceneHelpEvent"><a name="dtor.QGraphicsSceneHelpEvent"></a>QGraphicsSceneHelpEvent::<span class="name">~QGraphicsSceneHelpEvent</span>()</h3>
<p>Destroys the event.</p>
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<h3 class="fn" id="scenePos"><a name="scenePos"></a><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> QGraphicsSceneHelpEvent::<span class="name">scenePos</span>() const</h3>
<p>Returns the position of the mouse cursor in scene coordinates at the moment the help event was sent.</p>
<p><b>See also </b><a href="qgraphicsscenehelpevent.html#screenPos">screenPos</a>().</p>
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<h3 class="fn" id="screenPos"><a name="screenPos"></a><span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span> QGraphicsSceneHelpEvent::<span class="name">screenPos</span>() const</h3>
<p>Returns the position of the mouse cursor in screen coordinates at the moment the help event was sent.</p>
<p><b>See also </b><a href="qgraphicsscenehelpevent.html#scenePos">scenePos</a>().</p>
<!-- @@@screenPos -->
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