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<title>Creating proxies for well-known names: GIO Reference Manual</title>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id-1.5.5.5"></a>Creating proxies for well-known names</h2></div></div></div>
<p>
dbus-glib lets you create proxy objects for well-known names, like the
following example:
</p>
<div class="informalexample">
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<td class="listing_lines" align="right"><pre>1
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<td class="listing_code"><pre class="programlisting">proxy <span class="gtkdoc opt">=</span> <span class="function">dbus_g_proxy_new_for_name</span> <span class="gtkdoc opt">(</span>system_bus_connection<span class="#BC8F8F">"gtkdoc opt">,</span>
<span class="string">"org.freedesktop.Accounts"</span><span class="gtkdoc opt">,</span>
<span class="string">"/org/freedesktop/Accounts"</span><span class="gtkdoc opt">,</span>
<span class="string">"org.freedesktop.Accounts"</span><span class="gtkdoc opt">);</span></pre></td>
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<p>
For a <span class="type">DBusGProxy</span> constructed like this, method calls will be sent to
the current owner of the name, and that owner can change over time.
</p>
<p>
The same can be achieved with <a class="link" href="GDBusProxy.html" title="GDBusProxy"><span class="type">GDBusProxy</span></a>:
</p>
<div class="informalexample">
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<td class="listing_lines" align="right"><pre>1
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<td class="listing_code"><pre class="programlisting">error <span class="gtkdoc opt">=</span> NULL<span class="gtkdoc opt">;</span>
proxy <span class="gtkdoc opt">=</span> <span class="function"><a href="GDBusProxy.html#g-dbus-proxy-new-for-bus-sync">g_dbus_proxy_new_for_bus_sync</a></span> <span class="gtkdoc opt">(</span>G_BUS_TYPE_SYSTEM<span class="gtkdoc opt">,</span>
G_DBUS_PROXY_FLAGS_NONE<span class="gtkdoc opt">,</span>
NULL<span class="gtkdoc opt">,</span> <span class="comment">/* GDBusInterfaceInfo */</span>
<span class="string">"org.freedesktop.Accounts"</span><span class="gtkdoc opt">,</span>
<span class="string">"/org/freedesktop/Accounts"</span><span class="gtkdoc opt">,</span>
<span class="string">"org.freedesktop.Accounts"</span><span class="gtkdoc opt">,</span>
NULL<span class="gtkdoc opt">,</span> <span class="comment">/* GCancellable */</span>
<span class="gtkdoc opt">&</span>error<span class="gtkdoc opt">);</span></pre></td>
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<p>
For an added layer of safety, you can specify what D-Bus
interface the proxy is expected to conform to by using the
<a class="link" href="gio-D-Bus-Introspection-Data.html#GDBusInterfaceInfo"><span class="type">GDBusInterfaceInfo</span></a> type. Additionally, <a class="link" href="GDBusProxy.html" title="GDBusProxy"><span class="type" COLOR="#A020F0">> caches and tracks changes to the D-Bus properties on the remote
object. It also sets up match rules so D-Bus signals from the
remote object are delivered locally.
</p>
<p>
The <a class="link" href="GDBusProxy.html" title="GDBusProxy"><span class="type">GDBusProxy</span></a> type normally isn't used directly - instead
proxies subclassing <a class="link" href="GDBusProxy.html" title="GDBusProxy"><span class="type">GDBusProxy</span></a> generated by <span class="command"><strong>gdbus-codegen</strong></span> is used, see <a class="xref" href="gdbus-example-gdbus-codegen.html" title="Using gdbus-codegen">the section called “Using gdbus-codegen”</a>
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