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<title>Connection Class | Qt Core 5.9</title>
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<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 >Connection</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.4 Reference Documentation</td>
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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="#details">Detailed Description</a></li>
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<h1 class="title">Connection Class</h1>
<span class="small-subtitle">(<a href="qmetaobject-connection.html">QMetaObject::Connection</a>)<br/></span>
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <Connection></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += core</td></tr></table></div><ul>
<li><a href="qmetaobject-connection-members.html">List of all members, including inherited members</a></li>
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<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="qmetaobject-connection.html#Connection">Connection</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#Connection-2">Connection</a></b>(const Connection &<i>other</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#Connection-3">Connection</a></b>(Connection &&<i>o</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#dtor.Connection">~Connection</a></b>()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#operator-bool">operator bool</a></b>() const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Connection &</td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#operator-eq">operator=</a></b>(const Connection &<i>other</i>)</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Connection &</td><td class="memItemRight bottomAlign"><b><a href="qmetaobject-connection.html#operator-eq-1">operator=</a></b>(Connection &&<i>other</i>)</td></tr>
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<h2 id="details">Detailed Description</h2>
<p>Represents a handle to a signal-slot connection. It can be used to disconnect that connection, or check if the connection was successful</p>
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<p><b>See also </b><a href="qobject.html#disconnect">QObject::disconnect</a>().</p>
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<h2>Member Function Documentation</h2>
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<h3 class="fn" id="Connection"><a name="Connection"></a>Connection::<span class="name">Connection</span>()</h3>
<p>Creates a Connection instance.</p>
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<h3 class="fn" id="Connection-2"><a name="Connection-2"></a>Connection::<span class="name">Connection</span>(const <span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &<i>other</i>)</h3>
<p>Constructs a copy of <i>other</i>.</p>
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<h3 class="fn" id="Connection-3"><a name="Connection-3"></a>Connection::<span class="name">Connection</span>(<span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &&<i>o</i>)</h3>
<p>Move-constructs a Connection instance, making it point to the same object that <i>o</i> was pointing to.</p>
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<h3 class="fn" id="dtor.Connection"><a name="dtor.Connection"></a>Connection::<span class="name">~Connection</span>()</h3>
<p>Destructor for <a href="qmetaobject-connection.html">QMetaObject::Connection</a>.</p>
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<h3 class="fn" id="operator-bool"><a name="operator-bool"></a>Connection::<span class="name">operator bool</span>() const</h3>
<p>Returns <code>true</code> if the connection is valid.</p>
<p>The connection is valid if the call to <a href="qobject.html#connect">QObject::connect</a> succeeded. The connection is invalid if <a href="qobject.html#connect">QObject::connect</a> was not able to find the signal or the slot, or if the arguments do not match.</p>
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<h3 class="fn" id="operator-eq"><a name="operator-eq"></a><span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &Connection::<span class="name">operator=</span>(const <span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &<i>other</i>)</h3>
<p>Assigns <i>other</i> to this connection and returns a reference to this connection.</p>
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<h3 class="fn" id="operator-eq-1"><a name="operator-eq-1"></a><span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &Connection::<span class="name">operator=</span>(<span class="type"><a href="qmetaobject-connection.html#Connection">Connection</a></span> &&<i>other</i>)</h3>
<p>Move-assigns <i>other</i> to this object, and returns a reference.</p>
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