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<td align="left" valign="top" width="32"><a href="http://qt.nokia.com/"><img src="images/qt-logo.png" align="left" 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="functions.html"><font color="#004faf">All Functions</font></a> · <a href="overviews.html"><font color="#004faf">Overviews</font></a></td></tr></table><h1 class="title">Qt 3 Support Members for QCoreApplication</h1>
<p><b>The following class members are part of the <a href="qt3support.html">Qt 3 support layer</a>.</b> They are provided to help you port old code to Qt 4. We advise against using them in new code.</p>
<p><ul><li><a href="qcoreapplication.html">QCoreApplication class reference</a></li></ul></p>
<h2>Public Functions</h2>
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<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#lock">lock</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#locked">locked</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#tryLock">tryLock</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#unlock">unlock</a></b> ( bool <i>wakeUpGui</i> = true )</td></tr>
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<li><div bar="2" class="fn"></div>8 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
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<h2>Static Public Members</h2>
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<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#argc">argc</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char ** </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#argv">argv</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#enter_loop">enter_loop</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#exit_loop">exit_loop</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#loopLevel">loopLevel</a></b> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><b><a href="qcoreapplication-qt3.html#processOneEvent">processOneEvent</a></b> ()</td></tr>
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<h2>Member Function Documentation</h2>
<a name="//apple_ref/cpp/clm/QCoreApplication/argc"></a>
<h3 class="fn"><a name="argc"></a>int QCoreApplication::argc () <tt> [static]</tt></h3>
<p>Use <a href="qcoreapplication.html#arguments">arguments</a>().size() instead.</p>
<a name="//apple_ref/cpp/clm/QCoreApplication/argv"></a>
<h3 class="fn"><a name="argv"></a>char ** QCoreApplication::argv () <tt> [static]</tt></h3>
<p>Use <a href="qcoreapplication.html#arguments">arguments</a>() instead.</p>
<a name="//apple_ref/cpp/clm/QCoreApplication/enter_loop"></a>
<h3 class="fn"><a name="enter_loop"></a>int QCoreApplication::enter_loop () <tt> [static]</tt></h3>
<p>This function enters the main event loop (recursively). Do not call it unless you really know what you are doing.</p>
<a name="//apple_ref/cpp/clm/QCoreApplication/exit_loop"></a>
<h3 class="fn"><a name="exit_loop"></a>void QCoreApplication::exit_loop () <tt> [static]</tt></h3>
<p>This function exits from a recursive call to the main event loop. Do not call it unless you are an expert.</p>
<a name="//apple_ref/cpp/instm/QCoreApplication/lock"></a>
<h3 class="fn"><a name="lock"></a>void QCoreApplication::lock ()</h3>
<p>In Qt 3, this function locked the Qt library mutex, allowing non-GUI threads to perform basic printing operations using <a href="qpainter.html">QPainter</a>.</p>
<p>In Qt 4, this is no longer supported, since painting is only supported from within a paint event handler. This function does nothing.</p>
<p>See also <a href="qwidget.html#paintEvent">QWidget::paintEvent</a>().</p>
<a name="//apple_ref/cpp/instm/QCoreApplication/locked"></a>
<h3 class="fn"><a name="locked"></a>bool QCoreApplication::locked ()</h3>
<p>This function does nothing. It is there to keep old code working. It always returns false.</p>
<p>See <a href="qcoreapplication-qt3.html#lock">lock</a>() for details.</p>
<a name="//apple_ref/cpp/clm/QCoreApplication/loopLevel"></a>
<h3 class="fn"><a name="loopLevel"></a>int QCoreApplication::loopLevel () <tt> [static]</tt></h3>
<p>Returns the current loop level.</p>
<a name="//apple_ref/cpp/clm/QCoreApplication/processOneEvent"></a>
<h3 class="fn"><a name="processOneEvent"></a>void QCoreApplication::processOneEvent () <tt> [static]</tt></h3>
<p>Waits for an event to occur, processes it, then returns.</p>
<p>This function is useful for adapting Qt to situations where the event processing must be grafted onto existing program loops.</p>
<p>Using this function in new applications may be an indication of design problems.</p>
<p>See also <a href="qcoreapplication.html#processEvents">processEvents</a>(), <a href="qcoreapplication.html#exec">exec</a>(), and <a href="qtimer.html">QTimer</a>.</p>
<a name="//apple_ref/cpp/instm/QCoreApplication/tryLock"></a>
<h3 class="fn"><a name="tryLock"></a>bool QCoreApplication::tryLock ()</h3>
<p>This function does nothing. It is there to keep old code working. It always returns false.</p>
<p>See <a href="qcoreapplication-qt3.html#lock">lock</a>() for details.</p>
<a name="//apple_ref/cpp/instm/QCoreApplication/unlock"></a>
<h3 class="fn"><a name="unlock"></a>void QCoreApplication::unlock ( bool <i>wakeUpGui</i> = true )</h3>
<p>In Qt 3, this function unlocked the Qt library mutex. The mutex allowed non-GUI threads to perform basic printing operations using <a href="qpainter.html">QPainter</a>.</p>
<p>In Qt 4, this is no longer supported, since painting is only supported from within a paint event handler. This function does nothing.</p>
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