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<p>The QGraphicsSceneHelpEvent class provides events when a tooltip is requested. <a href="#details">More...</a></p>
<pre> #include <QGraphicsSceneHelpEvent></pre><p>Inherits <a href="qgraphicssceneevent.html">QGraphicsSceneEvent</a>.</p>
<p>This class was introduced in Qt 4.2.</p>
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<li><a href="qgraphicsscenehelpevent-members.html">List of all members, including inherited members</a></li>
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<h2>Public Functions</h2>
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<tr><td class="memItemLeft" align="right" valign="top"></td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsscenehelpevent.html#dtor.QGraphicsSceneHelpEvent">~QGraphicsSceneHelpEvent</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QPointF </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsscenehelpevent.html#scenePos">scenePos</a></b> () const</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QPoint </td><td class="memItemRight" valign="bottom"><b><a href="qgraphicsscenehelpevent.html#screenPos">screenPos</a></b> () const</td></tr>
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<li><div bar="2" class="fn"></div>1 public function inherited from <a href="qgraphicssceneevent.html#public-functions">QGraphicsSceneEvent</a></li>
<li><div bar="2" class="fn"></div>6 public functions inherited from <a href="qevent.html#public-functions">QEvent</a></li>
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<h3>Additional Inherited Members</h3>
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<li><div class="fn"></div>1 property inherited from <a href="qevent.html#properties">QEvent</a></li>
<li><div class="fn"></div>1 static public member inherited from <a href="qevent.html#static-public-members">QEvent</a></li>
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<h2>Detailed Description</h2>
<p>The QGraphicsSceneHelpEvent class provides events when a tooltip is requested.</p>
<p>When a <a href="qgraphicsview.html">QGraphicsView</a> receives a <a href="qevent.html">QEvent</a> of type <a href="qevent.html#Type-enum">QEvent::ToolTip</a>, it creates a QGraphicsSceneHelpEvent, 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="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="qstatustipevent.html">QStatusTipEvent</a> events and <a href="qevent.html">QEvents</a> of type <a href="qevent.html#Type-enum">QEvent::WhatsThis</a> to the scene.</p>
<p>See also <a href="qevent.html">QEvent</a>.</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn"><a name="dtor.QGraphicsSceneHelpEvent"></a>QGraphicsSceneHelpEvent::~QGraphicsSceneHelpEvent ()</h3>
<p>Destroys the event.</p>
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<h3 class="fn"><a name="scenePos"></a><a href="qpointf.html">QPointF</a> QGraphicsSceneHelpEvent::scenePos () const</h3>
<p>Returns the position of the mouse cursor in scene coordinates at the moment the help event was sent.</p>
<p>See also <a href="qgraphicsscenehelpevent.html#screenPos">screenPos</a>().</p>
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<h3 class="fn"><a name="screenPos"></a><a href="qpoint.html">QPoint</a> QGraphicsSceneHelpEvent::screenPos () const</h3>
<p>Returns the position of the mouse cursor in screen coordinates at the moment the help event was sent.</p>
<p>See also <a href="qgraphicsscenehelpevent.html#scenePos">scenePos</a>().</p>
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