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<a name="HudClientConnection"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
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<h2><span class="refentrytitle"><a name="HudClientConnection.top_of_page"></a>HudClientConnection</span></h2>
<p>HudClientConnection — Provide a connection to the HUD service</p>
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<div class="refsect1">
<a name="HudClientConnection.stability-level"></a><h2>Stability Level</h2>
Unstable, unless otherwise indicated
</div>
<div class="refsect1">
<a name="HudClientConnection.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK>
</td>
<td class="function_name">
<span class="c_punctuation">(</span><a class="link" href="HudClientConnection.html#HudClientConnectionNewQueryCallback" title="HudClientConnectionNewQueryCallback ()">*HudClientConnectionNewQueryCallback</a><span class="c_punctuation">)</span> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="returnvalue">HudClientConnection</span></a> *
</td>
<td class="function_name">
<a class="link" href="HudClientConnection.html#hud-client-connection-get-ref" title="hud_client_connection_get_ref ()">hud_client_connection_get_ref</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="returnvalue">HudClientConnection</span></a> *
</td>
<td class="function_name">
<a class="link" href="HudClientConnection.html#hud-client-connection-new" title="hud_client_connection_new ()">hud_client_connection_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK>
</td>
<td class="function_name">
<a class="link" href="HudClientConnection.html#hud-client-connection-new-query" title="hud_client_connection_new_query ()">hud_client_connection_new_query</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <GTKDOCLINK HREF="gchar"><span class="returnvalue">gchar</span></GTKDOCLINK> *
</td>
<td class="function_name">
<a class="link" href="HudClientConnection.html#hud-client-connection-get-address" title="hud_client_connection_get_address ()">hud_client_connection_get_address</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<GTKDOCLINK HREF="gboolean"><span class="returnvalue">gboolean</span></GTKDOCLINK>
</td>
<td class="function_name">
<a class="link" href="HudClientConnection.html#hud-client-connection-connected" title="hud_client_connection_connected ()">hud_client_connection_connected</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="HudClientConnection.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody>
<tr>
<td class="property_type">
<GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *</td>
<td class="property_name"><a class="link" href="HudClientConnection.html#HudClientConnection--address" title="The “address” property">address</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
<tr>
<td class="property_type">
<GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *</td>
<td class="property_name"><a class="link" href="HudClientConnection.html#HudClientConnection--path" title="The “path” property">path</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="HudClientConnection.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody><tr>
<td class="signal_type"><GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK></td>
<td class="signal_name"><a class="link" href="HudClientConnection.html#HudClientConnection-connection-status" title="The “connection-status” signal">connection-status</a></td>
<td class="signal_flags"><GTKDOCLINK HREF="G-SIGNAL-RUN-LAST:CAPS">Run Last</GTKDOCLINK></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="HudClientConnection.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="HudClientConnection.html#HUD-CLIENT-CONNECTION-SIGNAL-CONNECTION-STATUS:CAPS" title="HUD_CLIENT_CONNECTION_SIGNAL_CONNECTION_STATUS">HUD_CLIENT_CONNECTION_SIGNAL_CONNECTION_STATUS</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="HudClientConnection.html#HudClientConnectionClass" title="struct HudClientConnectionClass">HudClientConnectionClass</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="HudClientConnection.html#HudClientConnection-struct" title="struct HudClientConnection">HudClientConnection</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="HudClientConnection.html#HudClientConnectionPrivate" title="HudClientConnectionPrivate">HudClientConnectionPrivate</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="HudClientConnection.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen"> <GTKDOCLINK HREF="GObject">GObject</GTKDOCLINK>
<span class="lineart">╰──</span> HudClientConnection
</pre>
</div>
<div class="refsect1">
<a name="HudClientConnection.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <libhud-client/connection.h>
</pre>
</div>
<div class="refsect1">
<a name="HudClientConnection.description"></a><h2>Description</h2>
<p>The connection is an object to maintain a connection to the default
objects on the HUD service. It provides access to the functionality
there and can be used to create queries.</p>
<p> Most users should not bother with a connection, it will be created
by the <a class="link" href="HudClientQuery.html" title="HudClientQuery"><span class="type">HudClientQuery</span></a> if one is not provided. Most usage is for
testing and using custom HUD services.</p>
</div>
<div class="refsect1">
<a name="HudClientConnection.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="HudClientConnectionNewQueryCallback"></a><h3>HudClientConnectionNewQueryCallback ()</h3>
<pre class="programlisting"><GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK>
<span class="c_punctuation">(</span>*HudClientConnectionNewQueryCallback<span class="c_punctuation">)</span>
(<em class="parameter"><code><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> *connection</code></em>,
<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *query_path</code></em>,
<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *results_name</code></em>,
<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *appstack_name</code></em>,
<em class="parameter"><code><GTKDOCLINK HREF="gpointer"><span class="type">gpointer</span></GTKDOCLINK> user_data</code></em>);</pre>
<p>Callback for the async call to create a new query</p>
<div class="refsect3">
<a name="id-1.2.3.11.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>connection</p></td>
<td class="parameter_description"><p><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> for the request</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query_path</p></td>
<td class="parameter_description"><p>Path to the query object on DBus</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>results_name</p></td>
<td class="parameter_description"><p>DBus name for the results</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>appstack_name</p></td>
<td class="parameter_description"><p>DBus name for the appstack</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>Passed in user data</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hud-client-connection-get-ref"></a><h3>hud_client_connection_get_ref ()</h3>
<pre class="programlisting"><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="returnvalue">HudClientConnection</span></a> *
hud_client_connection_get_ref (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>Gets a reference to the default object that connects to the
default HUD service.</p>
<div class="refsect3">
<a name="id-1.2.3.11.3.5"></a><h4>Returns</h4>
<p> Refence to a <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hud-client-connection-new"></a><h3>hud_client_connection_new ()</h3>
<pre class="programlisting"><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="returnvalue">HudClientConnection</span></a> *
hud_client_connection_new (<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *dbus_address</code></em>,
<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *dbus_path</code></em>);</pre>
<p>Builds a HUD Connection object that can be used to connect to a
custom HUD service. For the most part, this should only be used
in testing, though there might be other uses. It is likely if you're
using this function you'd also be interested in
<a class="link" href="HudClientQuery.html#hud-client-query-new-for-connection" title="hud_client_query_new_for_connection ()"><code class="function">hud_client_query_new_for_connection()</code></a></p>
<div class="refsect3">
<a name="id-1.2.3.11.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>dbus_address</p></td>
<td class="parameter_description"><p>Address on DBus for the HUD service</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>dbus_path</p></td>
<td class="parameter_description"><p>Path to the object to create stuff</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.3.11.4.6"></a><h4>Returns</h4>
<p> A new <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hud-client-connection-new-query"></a><h3>hud_client_connection_new_query ()</h3>
<pre class="programlisting"><GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK>
hud_client_connection_new_query (<em class="parameter"><code><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> *connection</code></em>,
<em class="parameter"><code>const <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *query</code></em>,
<em class="parameter"><code><a class="link" href="HudClientConnection.html#HudClientConnectionNewQueryCallback" title="HudClientConnectionNewQueryCallback ()"><span class="type">HudClientConnectionNewQueryCallback</span></a> cb</code></em>,
<em class="parameter"><code><GTKDOCLINK HREF="gpointer"><span class="type">gpointer</span></GTKDOCLINK> user_data</code></em>);</pre>
<p>Function to create a new query in the HUD service and pass back
the information needed to create a <a class="link" href="HudClientQuery.html" title="HudClientQuery"><span class="type">HudClientQuery</span></a> object.</p>
<div class="refsect3">
<a name="id-1.2.3.11.5.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>connection</p></td>
<td class="parameter_description"><p>A <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>The initial query string</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cb</p></td>
<td class="parameter_description"><p>Callback when we've got the query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>Data to pass to the callback</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hud-client-connection-get-address"></a><h3>hud_client_connection_get_address ()</h3>
<pre class="programlisting">const <GTKDOCLINK HREF="gchar"><span class="returnvalue">gchar</span></GTKDOCLINK> *
hud_client_connection_get_address (<em class="parameter"><code><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> *connection</code></em>);</pre>
<p>Accessor to get the address of the HUD service.</p>
<div class="refsect3">
<a name="id-1.2.3.11.6.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>connection</p></td>
<td class="parameter_description"><p>A <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.3.11.6.6"></a><h4>Returns</h4>
<p> A DBus address</p>
<p></p>
</div>
</div>
<hr>
<div class="refsect2">
<a name="hud-client-connection-connected"></a><h3>hud_client_connection_connected ()</h3>
<pre class="programlisting"><GTKDOCLINK HREF="gboolean"><span class="returnvalue">gboolean</span></GTKDOCLINK>
hud_client_connection_connected (<em class="parameter"><code><a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> *connection</code></em>);</pre>
<p>Accessor to get the connected status of the connection</p>
<div class="refsect3">
<a name="id-1.2.3.11.7.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>connection</p></td>
<td class="parameter_description"><p>A <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.2.3.11.7.6"></a><h4>Returns</h4>
<p> If we're connected or not</p>
<p></p>
</div>
</div>
</div>
<div class="refsect1">
<a name="HudClientConnection.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="HUD-CLIENT-CONNECTION-SIGNAL-CONNECTION-STATUS:CAPS"></a><h3>HUD_CLIENT_CONNECTION_SIGNAL_CONNECTION_STATUS</h3>
<pre class="programlisting">#define HUD_CLIENT_CONNECTION_SIGNAL_CONNECTION_STATUS "connection-status"
</pre>
<p>Signal to notify on a change in the connection status</p>
</div>
<hr>
<div class="refsect2">
<a name="HudClientConnectionClass"></a><h3>struct HudClientConnectionClass</h3>
<pre class="programlisting">struct HudClientConnectionClass {
GObjectClass parent_class;
};
</pre>
<p>Class information for <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a></p>
<div class="refsect3">
<a name="id-1.2.3.12.3.5"></a><h4>Members</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="300px" class="struct_members_name">
<col class="struct_members_description">
<col width="200px" class="struct_members_annotations">
</colgroup>
<tbody><tr>
<td class="struct_member_name"><p><GTKDOCLINK HREF="GObjectClass"><span class="type">GObjectClass</span></GTKDOCLINK> <em class="structfield"><code><a name="HudClientConnectionClass.parent-class"></a>parent_class</code></em>;</p></td>
<td class="struct_member_description"><p><GTKDOCLINK HREF="GObjectClass"><span class="type">GObjectClass</span></GTKDOCLINK></p></td>
<td class="struct_member_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="HudClientConnection-struct"></a><h3>struct HudClientConnection</h3>
<pre class="programlisting">struct HudClientConnection;</pre>
<p>Object to make a generic connection to a HUD service. For the most
part people should just create a <a class="link" href="HudClientQuery.html" title="HudClientQuery"><span class="type">HudClientQuery</span></a> and that'll use the
default HUD service. For most folks that should be enough.</p>
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<div class="refsect2">
<a name="HudClientConnectionPrivate"></a><h3>HudClientConnectionPrivate</h3>
<pre class="programlisting">typedef struct _HudClientConnectionPrivate HudClientConnectionPrivate;</pre>
<p>Private data for <a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a>.</p>
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</div>
<div class="refsect1">
<a name="HudClientConnection.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="HudClientConnection--address"></a><h3>The <code class="literal">“address”</code> property</h3>
<pre class="programlisting"> “address” <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *</pre>
<p>The DBus address of the HUD service we should connect to.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: "com.canonical.hud"</p>
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<hr>
<div class="refsect2">
<a name="HudClientConnection--path"></a><h3>The <code class="literal">“path”</code> property</h3>
<pre class="programlisting"> “path” <GTKDOCLINK HREF="gchar"><span class="type">gchar</span></GTKDOCLINK> *</pre>
<p>The DBus path of the HUD service we should connect to.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: "/com/canonical/hud"</p>
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<div class="refsect1">
<a name="HudClientConnection.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="HudClientConnection-connection-status"></a><h3>The <code class="literal">“connection-status”</code> signal</h3>
<pre class="programlisting"><GTKDOCLINK HREF="void"><span class="returnvalue">void</span></GTKDOCLINK>
user_function (<a class="link" href="HudClientConnection.html" title="HudClientConnection"><span class="type">HudClientConnection</span></a> *arg0,
<GTKDOCLINK HREF="gboolean"><span class="type">gboolean</span></GTKDOCLINK> arg1,
<GTKDOCLINK HREF="gpointer"><span class="type">gpointer</span></GTKDOCLINK> user_data)</pre>
<p>Called when the connection status changes in some way.</p>
<div class="refsect3">
<a name="id-1.2.3.14.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<p>Flags: <GTKDOCLINK HREF="G-SIGNAL-RUN-LAST:CAPS">Run Last</GTKDOCLINK></p>
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