<?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/corelib/kernel/qbasictimer.cpp --> <head> <title>Qt 4.3: QBasicTimer 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">QBasicTimer Class Reference<br /><sup><sup>[<a href="qtcore.html">QtCore</a> module]</sup></sup></h1> <p>The QBasicTimer class provides timer events for objects. <a href="#details">More...</a></p> <pre> #include <QBasicTimer></pre><ul> <li><a href="qbasictimer-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="qbasictimer.html#QBasicTimer">QBasicTimer</a></b> ()</li> <li><div class="fn"/><b><a href="qbasictimer.html#dtor.QBasicTimer">~QBasicTimer</a></b> ()</li> <li><div class="fn"/>bool <b><a href="qbasictimer.html#isActive">isActive</a></b> () const</li> <li><div class="fn"/>void <b><a href="qbasictimer.html#start">start</a></b> ( int <i>msec</i>, QObject * <i>object</i> )</li> <li><div class="fn"/>void <b><a href="qbasictimer.html#stop">stop</a></b> ()</li> <li><div class="fn"/>int <b><a href="qbasictimer.html#timerId">timerId</a></b> () const</li> </ul> <a name="details"></a> <hr /> <h2>Detailed Description</h2> <p>The QBasicTimer class provides timer events for objects.</p> <p>This is a fast, lightweight, and low-level class used by Qt internally. We recommend using the higher-level <a href="qtimer.html">QTimer</a> class rather than this class if you want to use timers in your applications.</p> <p>To use this class, create a QBasicTimer, and call its <a href="qbasictimer.html#start">start</a>() function with a timeout interval and with a pointer to a <a href="qobject.html">QObject</a> subclass. When the timer times out it will send a timer event to the <a href="qobject.html">QObject</a> subclass. The timer can be stopped at any time using <a href="qbasictimer.html#stop">stop</a>(). <a href="qbasictimer.html#isActive">isActive</a>() returns true for a timer that is running; i.e. it has been started, has not reached the timeout time, and has not been stopped. The timer's ID can be retrieved using <a href="qbasictimer.html#timerId">timerId</a>().</p> <p>The <a href="widgets-wiggly.html">Wiggly</a> example uses QBasicTimer to repaint a widget at regular intervals.</p> <p>See also <a href="qtimer.html">QTimer</a>, <a href="qtimerevent.html">QTimerEvent</a>, <a href="qobject.html#timerEvent">QObject::timerEvent</a>(), <a href="timers.html">Timers</a>, and <a href="widgets-wiggly.html">Wiggly Example</a>.</p> <hr /> <h2>Member Function Documentation</h2> <h3 class="fn"><a name="QBasicTimer"></a>QBasicTimer::QBasicTimer ()</h3> <p>Contructs a basic timer.</p> <p>See also <a href="qbasictimer.html#start">start</a>().</p> <h3 class="fn"><a name="dtor.QBasicTimer"></a>QBasicTimer::~QBasicTimer ()</h3> <p>Destroys the basic timer.</p> <h3 class="fn"><a name="isActive"></a>bool QBasicTimer::isActive () const</h3> <p>Returns true if the timer is running, has not yet timed out, and has not been stopped; otherwise returns false.</p> <p>See also <a href="qbasictimer.html#start">start</a>() and <a href="qbasictimer.html#stop">stop</a>().</p> <h3 class="fn"><a name="start"></a>void QBasicTimer::start ( int <i>msec</i>, <a href="qobject.html">QObject</a> * <i>object</i> )</h3> <p>Starts (or restarts) the timer with a <i>msec</i> milliseconds timeout.</p> <p>The given <i>object</i> will receive timer events.</p> <p>See also <a href="qbasictimer.html#stop">stop</a>(), <a href="qbasictimer.html#isActive">isActive</a>(), and <a href="qobject.html#timerEvent">QObject::timerEvent</a>().</p> <h3 class="fn"><a name="stop"></a>void QBasicTimer::stop ()</h3> <p>Stops the timer.</p> <p>See also <a href="qbasictimer.html#start">start</a>() and <a href="qbasictimer.html#isActive">isActive</a>().</p> <h3 class="fn"><a name="timerId"></a>int QBasicTimer::timerId () const</h3> <p>Returns the timer's ID.</p> <p>See also <a href="qtimerevent.html#timerId">QTimerEvent::timerId</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>