<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qdebug.cpp --> <title>QDebugStateSaver Class | Qt Core 5.9</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 5.9</td><td ><a href="qtcore-index.html">Qt Core</a></td><td ><a href="qtcore-module.html">C++ Classes</a></td><td >QDebugStateSaver</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</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">QDebugStateSaver Class</h1> <!-- $$$QDebugStateSaver-brief --> <p>Convenience class for custom <a href="qdebug.html">QDebug</a> operators <a href="#details">More...</a></p> <!-- @@@QDebugStateSaver --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QDebugStateSaver></span> </td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += core</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.1</td></tr></table></div><ul> <li><a href="qdebugstatesaver-members.html">List of all members, including inherited members</a></li> </ul> <a name="public-functions"></a> <h2 id="public-functions">Public Functions</h2> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qdebugstatesaver.html#QDebugStateSaver">QDebugStateSaver</a></b>(QDebug &<i>dbg</i>)</td></tr> <tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qdebugstatesaver.html#dtor.QDebugStateSaver">~QDebugStateSaver</a></b>()</td></tr> </table></div> <a name="details"></a> <!-- $$$QDebugStateSaver-description --> <div class="descr"> <h2 id="details">Detailed Description</h2> <p>Convenience class for custom <a href="qdebug.html">QDebug</a> operators</p> <p>Saves the settings used by <a href="qdebug.html">QDebug</a>, and restores them upon destruction, then calls <a href="qdebug.html#maybeSpace">maybeSpace()</a>, to separate arguments with a space if <a href="qdebug.html#autoInsertSpaces">autoInsertSpaces()</a> was true at the time of constructing the <a href="qdebugstatesaver.html">QDebugStateSaver</a>.</p> <p>The automatic insertion of spaces between writes is one of the settings that <a href="qdebugstatesaver.html">QDebugStateSaver</a> stores for the duration of the current block.</p> <p>The settings of the internal <a href="qtextstream.html">QTextStream</a> are also saved and restored, so that using << hex in a <a href="qdebug.html">QDebug</a> operator doesn't affect other <a href="qdebug.html">QDebug</a> operators.</p> </div> <!-- @@@QDebugStateSaver --> <div class="func"> <h2>Member Function Documentation</h2> <!-- $$$QDebugStateSaver[overload1]$$$QDebugStateSaverQDebug& --> <h3 class="fn" id="QDebugStateSaver"><a name="QDebugStateSaver"></a>QDebugStateSaver::<span class="name">QDebugStateSaver</span>(<span class="type"><a href="qdebug.html">QDebug</a></span> &<i>dbg</i>)</h3> <p>Creates a <a href="qdebugstatesaver.html">QDebugStateSaver</a> instance, which saves the settings currently used by <i>dbg</i>.</p> <p><b>See also </b><a href="qdebug.html#setAutoInsertSpaces">QDebug::setAutoInsertSpaces</a>() and <a href="qdebug.html#autoInsertSpaces">QDebug::autoInsertSpaces</a>().</p> <!-- @@@QDebugStateSaver --> <!-- $$$~QDebugStateSaver[overload1]$$$~QDebugStateSaver --> <h3 class="fn" id="dtor.QDebugStateSaver"><a name="dtor.QDebugStateSaver"></a>QDebugStateSaver::<span class="name">~QDebugStateSaver</span>()</h3> <p>Destroys a <a href="qdebugstatesaver.html">QDebugStateSaver</a> instance, which restores the settings used when the <a href="qdebugstatesaver.html">QDebugStateSaver</a> instance was created.</p> <p><b>See also </b><a href="qdebug.html#setAutoInsertSpaces">QDebug::setAutoInsertSpaces</a>() and <a href="qdebug.html#autoInsertSpaces">QDebug::autoInsertSpaces</a>().</p> <!-- @@@~QDebugStateSaver --> </div> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2017 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>