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<td >Qt 5.12</td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-module.html">C++ Classes</a></td><td >QQmlError</td></tr></table><table class="buildversion"><tr>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#related-non-members">Related Non-Members</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QQmlError Class</h1>
<!-- $$$QQmlError-brief -->
<p>The <a href="qqmlerror.html">QQmlError</a> class encapsulates a QML error. <a href="#details">More...</a></p>
<!-- @@@QQmlError -->
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign">   <span class="preprocessor">#include &lt;QQmlError&gt;</span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += qml</td></tr><tr><td class="memItemLeft rightAlign topAlign"> Since:</td><td class="memItemRight bottomAlign">  Qt 5.0</td></tr></table></div><ul>
<li><a href="qqmlerror-members.html">List of all members, including inherited members</a></li>
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<a name="public-functions"></a>
<h2 id="public-functions">Public Functions</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#QQmlError">QQmlError</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#QQmlError-1">QQmlError</a></b>(const QQmlError &amp;<i>other</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#column">column</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#description">description</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#isValid">isValid</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#line">line</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QtMsgType </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#messageType">messageType</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QObject *</td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#object">object</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setColumn">setColumn</a></b>(int <i>column</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setDescription">setDescription</a></b>(const QString &amp;<i>description</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setLine">setLine</a></b>(int <i>line</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setMessageType">setMessageType</a></b>(QtMsgType <i>messageType</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setObject">setObject</a></b>(QObject *<i>object</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#setUrl">setUrl</a></b>(const QUrl &amp;<i>url</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QString </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#toString">toString</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QUrl </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#url">url</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> QQmlError &amp;</td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#operator-eq">operator=</a></b>(const QQmlError &amp;<i>other</i>)</td></tr>
</table></div>
<a name="related-non-members"></a>
<h2 id="related-non-members">Related Non-Members</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> QDebug </td><td class="memItemRight bottomAlign"><b><a href="qqmlerror.html#operator-lt-lt">operator&lt;&lt;</a></b>(QDebug <i>debug</i>, const QQmlError &amp;<i>error</i>)</td></tr>
</table></div>
<a name="details"></a>
<!-- $$$QQmlError-description -->
<div class="descr">
<h2 id="details">Detailed Description</h2>
<p>The <a href="qqmlerror.html">QQmlError</a> class encapsulates a QML error.</p>
<p><a href="qqmlerror.html">QQmlError</a> includes a textual description of the error, as well as location information (the file, line, and column). The <a href="qqmlerror.html#toString">toString</a>() method creates a single-line, human-readable string containing all of this information, for example:</p>
<pre class="cpp">

  file:<span class="comment">///home/user/test.qml:7:8: Invalid property assignment: double expected</span>

</pre>
<p>You can use qDebug(), qInfo(), or qWarning() to output errors to the console. This method will attempt to open the file indicated by the error and include additional contextual information.</p>
<pre class="cpp">

  file:<span class="comment">///home/user/test.qml:7:8: Invalid property assignment: double expected</span>
          y: <span class="string">&quot;hello&quot;</span>
             <span class="operator">^</span>

</pre>
</div>
<p><b>See also </b>QQuickView::errors() and <a href="qqmlcomponent.html#errors">QQmlComponent::errors</a>().</p>
<!-- @@@QQmlError -->
<div class="func">
<h2>Member Function Documentation</h2>
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<h3 class="fn" id="QQmlError"><a name="QQmlError"></a>QQmlError::<span class="name">QQmlError</span>()</h3>
<p>Creates an empty error object.</p>
<!-- @@@QQmlError -->
<!-- $$$QQmlError$$$QQmlErrorconstQQmlError& -->
<h3 class="fn" id="QQmlError-1"><a name="QQmlError-1"></a>QQmlError::<span class="name">QQmlError</span>(const <span class="type"><a href="qqmlerror.html#QQmlError">QQmlError</a></span> &amp;<i>other</i>)</h3>
<p>Creates a copy of <i>other</i>.</p>
<!-- @@@QQmlError -->
<!-- $$$column[overload1]$$$column -->
<h3 class="fn" id="column"><a name="column"></a><span class="type">int</span> QQmlError::<span class="name">column</span>() const</h3>
<p>Returns the error column number.</p>
<p><b>See also </b><a href="qqmlerror.html#setColumn">setColumn</a>().</p>
<!-- @@@column -->
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<h3 class="fn" id="description"><a name="description"></a><span class="type">QString</span> QQmlError::<span class="name">description</span>() const</h3>
<p>Returns the error description.</p>
<p><b>See also </b><a href="qqmlerror.html#setDescription">setDescription</a>().</p>
<!-- @@@description -->
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<h3 class="fn" id="isValid"><a name="isValid"></a><span class="type">bool</span> QQmlError::<span class="name">isValid</span>() const</h3>
<p>Returns true if this error is valid, otherwise false.</p>
<!-- @@@isValid -->
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<h3 class="fn" id="line"><a name="line"></a><span class="type">int</span> QQmlError::<span class="name">line</span>() const</h3>
<p>Returns the error line number.</p>
<p><b>See also </b><a href="qqmlerror.html#setLine">setLine</a>().</p>
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<!-- $$$messageType[overload1]$$$messageType -->
<h3 class="fn" id="messageType"><a name="messageType"></a><span class="type">QtMsgType</span> QQmlError::<span class="name">messageType</span>() const</h3>
<p>Returns the message type.</p>
<p>This function was introduced in  Qt 5.9.</p>
<p><b>See also </b><a href="qqmlerror.html#setMessageType">setMessageType</a>().</p>
<!-- @@@messageType -->
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<h3 class="fn" id="object"><a name="object"></a><span class="type">QObject</span> *QQmlError::<span class="name">object</span>() const</h3>
<p>Returns the nearest object where this error occurred. Exceptions in bound property expressions set this to the object to which the property belongs. It will be 0 for all other exceptions.</p>
<p><b>See also </b><a href="qqmlerror.html#setObject">setObject</a>().</p>
<!-- @@@object -->
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<h3 class="fn" id="setColumn"><a name="setColumn"></a><span class="type">void</span> QQmlError::<span class="name">setColumn</span>(<span class="type">int</span> <i>column</i>)</h3>
<p>Sets the error <i>column</i> number.</p>
<p><b>See also </b><a href="qqmlerror.html#column">column</a>().</p>
<!-- @@@setColumn -->
<!-- $$$setDescription[overload1]$$$setDescriptionconstQString& -->
<h3 class="fn" id="setDescription"><a name="setDescription"></a><span class="type">void</span> QQmlError::<span class="name">setDescription</span>(const <span class="type">QString</span> &amp;<i>description</i>)</h3>
<p>Sets the error <i>description</i>.</p>
<p><b>See also </b><a href="qqmlerror.html#description">description</a>().</p>
<!-- @@@setDescription -->
<!-- $$$setLine[overload1]$$$setLineint -->
<h3 class="fn" id="setLine"><a name="setLine"></a><span class="type">void</span> QQmlError::<span class="name">setLine</span>(<span class="type">int</span> <i>line</i>)</h3>
<p>Sets the error <i>line</i> number.</p>
<p><b>See also </b><a href="qqmlerror.html#line">line</a>().</p>
<!-- @@@setLine -->
<!-- $$$setMessageType[overload1]$$$setMessageTypeQtMsgType -->
<h3 class="fn" id="setMessageType"><a name="setMessageType"></a><span class="type">void</span> QQmlError::<span class="name">setMessageType</span>(<span class="type">QtMsgType</span> <i>messageType</i>)</h3>
<p>Sets the <i>messageType</i> for this message. The message type determines which QDebug handlers are responsible for receiving the message.</p>
<p>This function was introduced in  Qt 5.9.</p>
<p><b>See also </b><a href="qqmlerror.html#messageType">messageType</a>().</p>
<!-- @@@setMessageType -->
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<h3 class="fn" id="setObject"><a name="setObject"></a><span class="type">void</span> QQmlError::<span class="name">setObject</span>(<span class="type">QObject</span> *<i>object</i>)</h3>
<p>Sets the nearest <i>object</i> where this error occurred.</p>
<p><b>See also </b><a href="qqmlerror.html#object">object</a>().</p>
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<h3 class="fn" id="setUrl"><a name="setUrl"></a><span class="type">void</span> QQmlError::<span class="name">setUrl</span>(const <span class="type">QUrl</span> &amp;<i>url</i>)</h3>
<p>Sets the <i>url</i> for the file that caused this error.</p>
<p><b>See also </b><a href="qqmlerror.html#url">url</a>().</p>
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<h3 class="fn" id="toString"><a name="toString"></a><span class="type">QString</span> QQmlError::<span class="name">toString</span>() const</h3>
<p>Returns the error as a human readable string.</p>
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<h3 class="fn" id="url"><a name="url"></a><span class="type">QUrl</span> QQmlError::<span class="name">url</span>() const</h3>
<p>Returns the url for the file that caused this error.</p>
<p><b>See also </b><a href="qqmlerror.html#setUrl">setUrl</a>().</p>
<!-- @@@url -->
<!-- $$$operator=[overload1]$$$operator=constQQmlError& -->
<h3 class="fn" id="operator-eq"><a name="operator-eq"></a><span class="type"><a href="qqmlerror.html#QQmlError">QQmlError</a></span> &amp;QQmlError::<span class="name">operator=</span>(const <span class="type"><a href="qqmlerror.html#QQmlError">QQmlError</a></span> &amp;<i>other</i>)</h3>
<p>Assigns <i>other</i> to this error object.</p>
<!-- @@@operator= -->
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<div class="relnonmem">
<h2>Related Non-Members</h2>
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<h3 class="fn" id="operator-lt-lt"><a name="operator-lt-lt"></a><span class="type">QDebug</span> <span class="name">operator&lt;&lt;</span>(<span class="type">QDebug</span> <i>debug</i>, const <span class="type"><a href="qqmlerror.html#QQmlError">QQmlError</a></span> &amp;<i>error</i>)</h3>
<p>Outputs a human readable version of <i>error</i> to <i>debug</i>.</p>
<!-- @@@operator<< -->
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