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<td >Qt 5.12</td><td ><a href="qtdbus-index.html">Qt D-Bus</a></td><td >QDBus Namespace</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtdbus-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#types">Types</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">QDBus Namespace</h1>
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<p>The <a href="qdbus.html">QDBus</a> namespace contains miscellaneous identifiers used throughout the Qt D-Bus module. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Header:</td><td class="memItemRight bottomAlign"> <span class="preprocessor">#include <QDBus></span>
</td></tr><tr><td class="memItemLeft rightAlign topAlign"> qmake:</td><td class="memItemRight bottomAlign"> QT += dbus</td></tr></table></div><ul>
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<h2 id="types">Types</h2>
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<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="qdbus.html#CallMode-enum">CallMode</a></b> { NoBlock, Block, BlockWithGui, AutoDetect }</td></tr>
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<h2 id="details">Detailed Description</h2>
<p>The <a href="qdbus.html">QDBus</a> namespace contains miscellaneous identifiers used throughout the Qt D-Bus module.</p>
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<h2>Type Documentation</h2>
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<h3 class="fn" id="CallMode-enum"><a name="CallMode-enum"></a>enum QDBus::<span class="name">CallMode</span></h3>
<p>This enum describes the various ways of placing a function call. The valid modes are:</p>
<div class="table"><table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><code>QDBus::NoBlock</code></td><td class="topAlign tblval"><code>0</code></td><td class="topAlign">Place the call but don't wait for the reply (the reply's contents will be discarded).</td></tr>
<tr><td class="topAlign"><code>QDBus::Block</code></td><td class="topAlign tblval"><code>1</code></td><td class="topAlign">Don't use an event loop to wait for a reply, but instead block on network operations while waiting. This means the user-interface may not be updated until the function returns.</td></tr>
<tr><td class="topAlign"><code>QDBus::BlockWithGui</code></td><td class="topAlign tblval"><code>2</code></td><td class="topAlign">Use the Qt event loop to wait for a reply. This means that the user-interface will stay responsive (processing input events), but it also means other events may happen, like signal delivery and other D-Bus method calls.</td></tr>
<tr><td class="topAlign"><code>QDBus::AutoDetect</code></td><td class="topAlign tblval"><code>3</code></td><td class="topAlign">Automatically detect if the called function has a reply.</td></tr>
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<p>When using BlockWithGui, applications must be prepared for reentrancy in any function.</p>
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