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<td >Qt 5.9</td><td ><a href="qtdbus-index.html">Qt D-Bus</a></td><td >Qt D-Bus C++ Classes</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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<li class="level1"><a href="#namespaces">Namespaces</a></li>
<li class="level1"><a href="#classes">Classes</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">Qt D-Bus C++ Classes</h1>
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<p>The Qt D-Bus module is a Unix-only library that you can use to perform Inter-Process Communication using the <a href="qtdbus-index.html">D-Bus</a> protocol. <a href="#details">More...</a></p>
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<tr class="odd topAlign"><td class="tblName"><p><a href="qdbus.html">QDBus</a></p></td><td class="tblDescr"><p>Contains miscellaneous identifiers used throughout the Qt D-Bus module</p></td></tr>
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<h2 id="classes">Classes</h2>
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<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusabstractadaptor.html">QDBusAbstractAdaptor</a></p></td><td class="tblDescr"><p>The base class of D-Bus adaptor classes</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusabstractinterface.html">QDBusAbstractInterface</a></p></td><td class="tblDescr"><p>The base class for all D-Bus interfaces in the Qt D-Bus binding, allowing access to remote interfaces</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusargument.html">QDBusArgument</a></p></td><td class="tblDescr"><p>Used to marshall and demarshall D-Bus arguments</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusconnection.html">QDBusConnection</a></p></td><td class="tblDescr"><p>Represents a connection to the D-Bus bus daemon</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusconnectioninterface.html">QDBusConnectionInterface</a></p></td><td class="tblDescr"><p>Access to the D-Bus bus daemon service</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbuscontext.html">QDBusContext</a></p></td><td class="tblDescr"><p>Allows slots to determine the D-Bus context of the calls</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbuserror.html">QDBusError</a></p></td><td class="tblDescr"><p>Represents an error received from the D-Bus bus or from remote applications found in the bus</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusobjectpath.html">QDBusObjectPath</a></p></td><td class="tblDescr"><p>Enables the programmer to identify the OBJECT_PATH type provided by the D-Bus typesystem</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbussignature.html">QDBusSignature</a></p></td><td class="tblDescr"><p>Enables the programmer to identify the SIGNATURE type provided by the D-Bus typesystem</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusvariant.html">QDBusVariant</a></p></td><td class="tblDescr"><p>Enables the programmer to identify the variant type provided by the D-Bus typesystem</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusinterface.html">QDBusInterface</a></p></td><td class="tblDescr"><p>Proxy for interfaces on remote objects</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusmessage.html">QDBusMessage</a></p></td><td class="tblDescr"><p>Represents one message sent or received over the D-Bus bus</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbuspendingcall.html">QDBusPendingCall</a></p></td><td class="tblDescr"><p>Refers to one pending asynchronous call</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbuspendingcallwatcher.html">QDBusPendingCallWatcher</a></p></td><td class="tblDescr"><p>Convenient way for waiting for asynchronous replies</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbuspendingreply.html">QDBusPendingReply</a></p></td><td class="tblDescr"><p>Contains the reply to an asynchronous method call</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusreply.html">QDBusReply</a></p></td><td class="tblDescr"><p>Stores the reply for a method call to a remote object</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusserver.html">QDBusServer</a></p></td><td class="tblDescr"><p>Peer-to-peer communication between processes on the same computer</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusservicewatcher.html">QDBusServiceWatcher</a></p></td><td class="tblDescr"><p>Allows the user to watch for a bus service change</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qdbusunixfiledescriptor.html">QDBusUnixFileDescriptor</a></p></td><td class="tblDescr"><p>Holds one Unix file descriptor</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="qdbusvirtualobject.html">QDBusVirtualObject</a></p></td><td class="tblDescr"><p>Used to handle several DBus paths with one class</p></td></tr>
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<h2 id="details">Detailed Description</h2>
<p>Applications using the Qt D-Bus module can provide services to other, remote applications by exporting objects, as well as use services exported by those applications by placing calls and accessing properties.</p>
<p>The Qt D-Bus module provides an interface that extends the Qt <a href="../qtcore/signalsandslots.html">Signals and Slots</a> mechanism, allowing one to connect to a signal emitted remotely as well as to connect a local signal to remote slot.</p>
<p>To use this module, use the following code in your application:</p>
<pre class="cpp">
<span class="preprocessor">#include <QtDBus></span>
</pre>
<p>If you're using qmake to build your application, you can add this line to your .pro file to make it link against the Qt D-Bus libraries:</p>
<pre class="cpp">
QT += dbus
</pre>
<p><b>Note: </b>The source code for this module is located in the <code>src/qdbus</code> directory. When installing Qt from source, this module is built when Qt's tools are built.</p><p>See the <a href="qtdbus-index.html">D-Bus</a> page for detailed information on how to use this module.</p>
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