<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html> <html lang="en"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <!-- qqmlloggingcategory.cpp --> <title>LoggingCategory QML Type | Qt QML 5.11</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 ><a href="../qtdoc/index.html">Qt 5.11</a></td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-qmlmodule.html">QML Types</a></td><td >LoggingCategory QML Type</td></tr></table><table class="buildversion"><tr> <td id="buildversion" width="100%" align="right">Qt 5.11.2 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="#properties">Properties</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">LoggingCategory QML Type</h1> <span class="subtitle"></span> <!-- $$$LoggingCategory-brief --> <p>Defines a logging category in QML. <a href="#details">More...</a></p> <!-- @@@LoggingCategory --> <div class="table"><table class="alignedsummary"> <tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import QtQml 2.11</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign"> Qt 5.8</td></tr></table></div><ul> <li><a href="qml-qtqml-loggingcategory-members.html">List of all members, including inherited members</a></li> </ul> <a name="properties"></a> <h2 id="properties">Properties</h2> <ul> <li class="fn"><b><b><a href="qml-qtqml-loggingcategory.html#name-prop">name</a></b></b> : string</li> </ul> <!-- $$$LoggingCategory-description --> <a name="details"></a> <h2 id="details">Detailed Description</h2> <p>A logging category can be passed to console.<a href="../qtdoc/qtquick-debugging.html#log">log()</a> and friends as the first argument. If supplied to to the logger the <a href="qml-qtqml-loggingcategory.html">LoggingCategory</a>'s name will be used as Logging Category otherwise the default logging category will be used.</p> <pre class="qml"> import QtQuick 2.8 <span class="type"><a href="../qtquick/qml-qtquick-item.html">Item</a></span> { <span class="type"><a href="qml-qtqml-loggingcategory.html">LoggingCategory</a></span> { <span class="name">id</span>: <span class="name">category</span> <span class="name">name</span>: <span class="string">"com.qt.category"</span> } <span class="name">Component</span>.onCompleted: { <span class="name">console</span>.<span class="name">log</span>(<span class="name">category</span>, <span class="string">"message"</span>); } } </pre> <p><b>Note: </b>As the creation of objects is expensive, it is encouraged to put the needed <a href="qml-qtqml-loggingcategory.html">LoggingCategory</a> definitions into a singleton and import this where needed.</p><p><b>See also </b><a href="../qtcore/qloggingcategory.html">QLoggingCategory</a>.</p> <!-- @@@LoggingCategory --> <h2>Property Documentation</h2> <!-- $$$name --> <div class="qmlitem"><div class="qmlproto"> <div class="table"><table class="qmlname"> <tr valign="top" class="odd" id="name-prop"> <td class="tblQmlPropNode"><p> <a name="name-prop"></a><span class="name">name</span> : <span class="type"><a href="qml-string.html">string</a></span></p></td></tr> </table></div> </div><div class="qmldoc"><p>Holds the name of the logging category.</p> <p><b>Note: </b>This property needs to be set when declaring the <a href="qml-qtqml-loggingcategory.html">LoggingCategory</a> and cannot be changed later.</p><p><b>See also </b><a href="../qtcore/qloggingcategory.html#categoryName">QLoggingCategory::categoryName()</a>.</p> </div></div><!-- @@@name --> <br/> </div> </div> </div> </div> </div> <div class="footer"> <p> <acronym title="Copyright">©</acronym> 2018 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>