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<div class="section" id="the-legacy-dbus-support-module">
<span id="ref-dbus"></span><h1>The Legacy DBus Support Module<a class="headerlink" href="#the-legacy-dbus-support-module" title="Permalink to this headline">¶</a></h1>
<p>Note that There are no plans for the standard <tt class="docutils literal"><span class="pre">dbus-python</span></tt> language bindings
package to be ported to Python v3 and so it is recommended that new
applications use the <tt class="xref py py-mod docutils literal"><span class="pre">QtDBus</span></tt> module instead.</p>
<p>The DBus support module is installed as <tt class="xref py py-mod docutils literal"><span class="pre">dbus.mainloop.qt</span></tt> and provides
support for the Qt event loop to <tt class="docutils literal"><span class="pre">dbus-python</span></tt>. The module’s API is almost
identical to that of the <tt class="xref py py-mod docutils literal"><span class="pre">dbus.mainloop.glib</span></tt> modules that provides
support for the GLib event loop.</p>
<p>The <tt class="xref py py-mod docutils literal"><span class="pre">dbus.mainloop.qt</span></tt> module contains the following function.</p>
<dl class="function">
<dt id="DBusQtMainLoop">
<tt class="descname">DBusQtMainLoop</tt><big>(</big><em>set_as_default=False</em><big>)</big><a class="headerlink" href="#DBusQtMainLoop" title="Permalink to this definition">¶</a></dt>
<dd><p>Create a <tt class="docutils literal"><span class="pre">dbus.mainloop.NativeMainLoop</span></tt> object that uses the the Qt event
loop.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><strong>set_as_default</strong> – is optionally set to make the main loop instance the default for all
new Connection and Bus instances. It may only be specified as a
keyword argument, and not as a positional argument.</td>
</tr>
</tbody>
</table>
</dd></dl>
<p>The following code fragment is all that is normally needed to set up the
standard <tt class="docutils literal"><span class="pre">dbus-python</span></tt> language bindings package to be used with PyQt:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="kn">from</span> <span class="nn">dbus.mainloop.qt</span> <span class="kn">import</span> <span class="n">DBusQtMainLoop</span>
<span class="n">DBusQtMainLoop</span><span class="p">(</span><span class="n">set_as_default</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
</pre></div>
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