<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qgraphicssceneevent.cpp --> <title>QGraphicsSceneWheelEvent Class | Qt Widgets 5.12.2</title> <link rel="stylesheet" type="text/css" href="style/offline-simple.css" /> <script type="text/javascript"> document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css"); // loading style sheet breaks anchors that were jumped to before // so force jumping to anchor again setTimeout(function() { var anchor = location.hash; // need to jump to different anchor first (e.g. none) location.hash = "#"; setTimeout(function() { location.hash = anchor; }, 0); }, 0); </script> </head> <body> <div class="header" id="qtdocheader"> <div class="main"> <div class="main-rounded"> <div class="navigationbar"> <table><tr> <td >Qt 5.12</td><td ><a href="qtwidgets-index.html">Qt Widgets</a></td><td ><a href="qtwidgets-module.html">C++ Classes</a></td><td >QGraphicsSceneWheelEvent</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right"><a href="qtwidgets-index.html">Qt 5.12.2 Reference Documentation</a></td> </tr></table> </div> </div> <div class="content"> <div class="line"> <div class="content mainContent"> <div class="sidebar"> <div class="toc"> <h3><a name="toc">Contents</a></h3> <ul> <li class="level1"><a href="#public-functions">Public Functions</a></li> <li class="level1"><a href="#details">Detailed Description</a></li> </ul> </div> <div class="sidebar-content" id="sidebar-content"></div></div> <h1 class="title">QGraphicsSceneWheelEvent Class</h1> <!-- $$$QGraphicsSceneWheelEvent-brief --> <p>The <a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a> class provides wheel events in the graphics view framework. <a href="#details">More...</a></p> <!-- @@@QGraphicsSceneWheelEvent --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QGraphicsSceneWheelEvent></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="qgraphicsscenewheelevent-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h2 id="public-functions">Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> virtual </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#dtor.QGraphicsSceneWheelEvent">~QGraphicsSceneWheelEvent</a></b>()</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> Qt::MouseButtons </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#buttons">buttons</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#delta">delta</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> Qt::KeyboardModifiers </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#modifiers">modifiers</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> Qt::Orientation </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#orientation">orientation</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#pos">pos</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QPointF </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#scenePos">scenePos</a></b>() const</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> QPoint </td><td class="memItemRight bottomAlign"><b><a href="qgraphicsscenewheelevent.html#screenPos">screenPos</a></b>() const</td></tr> </table></div> <ul> <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> </ul> <h3>Additional Inherited Members</h3> <ul> <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> </ul> <a name="details"></a> <!-- $$$QGraphicsSceneWheelEvent-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>The <a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a> class provides wheel events in the graphics view framework.</p> <p>The <a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a> class provides wheel events in the graphics view framework.</p> <p><a href="../qtgui/qwheelevent.html">QWheelEvent</a>s received by a <a href="qgraphicsview.html">QGraphicsView</a> are translated into QGraphicsSceneWheelEvents; it translates the <a href="../qtgui/qwheelevent.html#globalPos">QWheelEvent::globalPos</a>() into item, scene, and screen coordinates (<a href="qgraphicsscenewheelevent.html#pos">pos</a>(), <a href="qgraphicsscenewheelevent.html#scenePos">scenePos</a>(), and <a href="qgraphicsscenewheelevent.html#screenPos">screenPos</a>()).</p> </div> <p><b>See also </b><a href="qgraphicsscenemouseevent.html">QGraphicsSceneMouseEvent</a>, <a href="qgraphicsscenecontextmenuevent.html">QGraphicsSceneContextMenuEvent</a>, <a href="qgraphicsscenehoverevent.html">QGraphicsSceneHoverEvent</a>, and <a href="../qtgui/qwheelevent.html">QWheelEvent</a>.</p> <!-- @@@QGraphicsSceneWheelEvent --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$~QGraphicsSceneWheelEvent[overload1]$$$~QGraphicsSceneWheelEvent --> <h3 class="fn" id="dtor.QGraphicsSceneWheelEvent"><a name="dtor.QGraphicsSceneWheelEvent"></a><code>[virtual] </code>QGraphicsSceneWheelEvent::<span class="name">~QGraphicsSceneWheelEvent</span>()</h3> <p>Destroys the <a href="qgraphicsscenewheelevent.html">QGraphicsSceneWheelEvent</a>.</p> <!-- @@@~QGraphicsSceneWheelEvent --> <!-- $$$buttons[overload1]$$$buttons --> <h3 class="fn" id="buttons"><a name="buttons"></a><span class="type"><a href="../qtcore/qt.html#MouseButton-enum">Qt::MouseButtons</a></span> QGraphicsSceneWheelEvent::<span class="name">buttons</span>() const</h3> <p>Returns the mouse buttons that were pressed when the wheel event occurred.</p> <p><b>See also </b><a href="qgraphicsscenewheelevent.html#modifiers">modifiers</a>().</p> <!-- @@@buttons --> <!-- $$$delta[overload1]$$$delta --> <h3 class="fn" id="delta"><a name="delta"></a><span class="type">int</span> QGraphicsSceneWheelEvent::<span class="name">delta</span>() const</h3> <p>Returns the distance that the wheel is rotated, in eighths (1/8s) of a degree. A positive value indicates that the wheel was rotated forwards away from the user; a negative value indicates that the wheel was rotated backwards toward the user.</p> <p>Most mouse types work in steps of 15 degrees, in which case the delta value is a multiple of 120 (== 15 * 8).</p> <!-- @@@delta --> <!-- $$$modifiers[overload1]$$$modifiers --> <h3 class="fn" id="modifiers"><a name="modifiers"></a><span class="type"><a href="../qtcore/qt.html#KeyboardModifier-enum">Qt::KeyboardModifiers</a></span> QGraphicsSceneWheelEvent::<span class="name">modifiers</span>() const</h3> <p>Returns the keyboard modifiers that were active when the wheel event occurred.</p> <p><b>See also </b><a href="qgraphicsscenewheelevent.html#buttons">buttons</a>().</p> <!-- @@@modifiers --> <!-- $$$orientation[overload1]$$$orientation --> <h3 class="fn" id="orientation"><a name="orientation"></a><span class="type"><a href="../qtcore/qt.html#Orientation-enum">Qt::Orientation</a></span> QGraphicsSceneWheelEvent::<span class="name">orientation</span>() const</h3> <p>Returns the wheel orientation.</p> <!-- @@@orientation --> <!-- $$$pos[overload1]$$$pos --> <h3 class="fn" id="pos"><a name="pos"></a><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> QGraphicsSceneWheelEvent::<span class="name">pos</span>() const</h3> <p>Returns the position of the cursor in item coordinates when the wheel event occurred.</p> <p><b>See also </b><a href="qgraphicsscenewheelevent.html#scenePos">scenePos</a>() and <a href="qgraphicsscenewheelevent.html#screenPos">screenPos</a>().</p> <!-- @@@pos --> <!-- $$$scenePos[overload1]$$$scenePos --> <h3 class="fn" id="scenePos"><a name="scenePos"></a><span class="type"><a href="../qtcore/qpointf.html">QPointF</a></span> QGraphicsSceneWheelEvent::<span class="name">scenePos</span>() const</h3> <p>Returns the position of the cursor in scene coordinates when the wheel event occurred.</p> <p><b>See also </b><a href="qgraphicsscenewheelevent.html#pos">pos</a>() and <a href="qgraphicsscenewheelevent.html#screenPos">screenPos</a>().</p> <!-- @@@scenePos --> <!-- $$$screenPos[overload1]$$$screenPos --> <h3 class="fn" id="screenPos"><a name="screenPos"></a><span class="type"><a href="../qtcore/qpoint.html">QPoint</a></span> QGraphicsSceneWheelEvent::<span class="name">screenPos</span>() const</h3> <p>Returns the position of the cursor in screen coordinates when the wheel event occurred.</p> <p><b>See also </b><a href="qgraphicsscenewheelevent.html#pos">pos</a>() and <a href="qgraphicsscenewheelevent.html#scenePos">scenePos</a>().</p> <!-- @@@screenPos --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners.<br/> The documentation provided herein is licensed under the terms of the <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation License version 1.3</a> as published by the Free Software Foundation.<br/> Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. </p> </div> </body> </html>