<?xml version="1.0" encoding="iso-8859-1"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <!-- /tmp/qt-4.3.4-qt-1203442408707/qt-x11-opensource-src-4.3.4/src/gui/kernel/qevent.cpp --> <head> <title>Qt 4.3: QHoverEvent Class Reference</title> <link href="classic.css" rel="stylesheet" type="text/css" /> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr> <td align="left" valign="top" width="32"><a href="http://www.trolltech.com/products/qt"><img src="images/qt-logo.png" align="left" width="32" height="32" border="0" /></a></td> <td width="1"> </td><td class="postheader" valign="center"><a href="index.html"><font color="#004faf">Home</font></a> · <a href="classes.html"><font color="#004faf">All Classes</font></a> · <a href="mainclasses.html"><font color="#004faf">Main Classes</font></a> · <a href="groups.html"><font color="#004faf">Grouped Classes</font></a> · <a href="modules.html"><font color="#004faf">Modules</font></a> · <a href="functions.html"><font color="#004faf">Functions</font></a></td> <td align="right" valign="top" width="230"><a href="http://www.trolltech.com"><img src="images/trolltech-logo.png" align="right" width="203" height="32" border="0" /></a></td></tr></table><h1 align="center">QHoverEvent Class Reference<br /><sup><sup>[<a href="qtgui.html">QtGui</a> module]</sup></sup></h1> <p>The QHoverEvent class contains parameters that describe a mouse event. <a href="#details">More...</a></p> <pre> #include <QHoverEvent></pre><p>Inherits <a href="qevent.html">QEvent</a>.</p> <ul> <li><a href="qhoverevent-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h3>Public Functions</h3> <ul> <li><div class="fn"/><b><a href="qhoverevent.html#QHoverEvent">QHoverEvent</a></b> ( Type <i>type</i>, const QPoint & <i>pos</i>, const QPoint & <i>oldPos</i> )</li> <li><div class="fn"/>const QPoint & <b><a href="qhoverevent.html#oldPos">oldPos</a></b> () const</li> <li><div class="fn"/>const QPoint & <b><a href="qhoverevent.html#pos">pos</a></b> () const</li> </ul> <ul> <li><div class="fn"/>6 public functions inherited from <a href="qevent.html#public-functions">QEvent</a></li> </ul> <h3>Additional Inherited Members</h3> <ul> <li><div class="fn"/>1 property inherited from <a href="qevent.html#properties">QEvent</a></li> </ul> <a name="details"></a> <hr /> <h2>Detailed Description</h2> <p>The QHoverEvent class contains parameters that describe a mouse event.</p> <p>Mouse events occur when a mouse cursor is moved into, out of, or within a widget, and if the widget has the <a href="qt.html#WidgetAttribute-enum">Qt::WA_Hover</a> attribute.</p> <p>The function <a href="qhoverevent.html#pos">pos</a>() gives the current cursor position, while <a href="qhoverevent.html#oldPos">oldPos</a>() gives the old mouse position.</p> <hr /> <h2>Member Function Documentation</h2> <h3 class="fn"><a name="QHoverEvent"></a>QHoverEvent::QHoverEvent ( <a href="qevent.html#Type-enum">Type</a> <i>type</i>, const <a href="qpoint.html">QPoint</a> & <i>pos</i>, const <a href="qpoint.html">QPoint</a> & <i>oldPos</i> )</h3> <p>Constructs a hover event object.</p> <p>The <i>type</i> parameter must be <a href="qevent.html#Type-enum">QEvent::HoverEnter</a>, <a href="qevent.html#Type-enum">QEvent::HoverLeave</a>, or <a href="qevent.html#Type-enum">QEvent::HoverMove</a>.</p> <p>The <i>pos</i> is the current mouse cursor's position relative to the receiving widget, while <i>oldPos</i> is the previous mouse cursor's position relative to the receiving widget.</p> <h3 class="fn"><a name="oldPos"></a>const <a href="qpoint.html">QPoint</a> & QHoverEvent::oldPos () const</h3> <p>Returns the previous position of the mouse cursor, relative to the widget that received the event. If there is no previous position, oldPos() will return the same position as <a href="qhoverevent.html#pos">pos</a>().</p> <p>On <a href="qevent.html#Type-enum">QEvent::HoverEnter</a> events, this position will always be <a href="qpoint.html">QPoint</a>(-1, -1).</p> <p>See also <a href="qhoverevent.html#pos">pos</a>().</p> <h3 class="fn"><a name="pos"></a>const <a href="qpoint.html">QPoint</a> & QHoverEvent::pos () const</h3> <p>Returns the position of the mouse cursor, relative to the widget that received the event.</p> <p>On <a href="qevent.html#Type-enum">QEvent::HoverLeave</a> events, this position will always be <a href="qpoint.html">QPoint</a>(-1, -1).</p> <p>See also <a href="qhoverevent.html#oldPos">oldPos</a>().</p> <p /><address><hr /><div align="center"> <table width="100%" cellspacing="0" border="0"><tr class="address"> <td width="30%">Copyright © 2008 <a href="trolltech.html">Trolltech</a></td> <td width="40%" align="center"><a href="trademarks.html">Trademarks</a></td> <td width="30%" align="right"><div align="right">Qt 4.3.4</div></td> </tr></table></div></address></body> </html>