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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<th width="100%" align="center">Unique 3.0.2
 Reference Manual</th>
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<tr><td colspan="5" class="shortcuts">
<a href="#UniqueBackend.synopsis" class="shortcut">Top</a>
                   | 
                  <a href="#UniqueBackend.description" class="shortcut">Description</a>
                   | 
                  <a href="#UniqueBackend.object-hierarchy" class="shortcut">Object Hierarchy</a>
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<div class="refentry">
<a name="UniqueBackend"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="UniqueBackend.top_of_page"></a>UniqueBackend</span></h2>
<p>UniqueBackend — Backend abstraction</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="UniqueBackend.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">struct              <a class="link" href="UniqueBackend.html#UniqueBackend-struct" title="struct UniqueBackend">UniqueBackend</a>;
struct              <a class="link" href="UniqueBackend.html#UniqueBackendClass" title="struct UniqueBackendClass">UniqueBackendClass</a>;
<a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="returnvalue">UniqueBackend</span></a> *        <a class="link" href="UniqueBackend.html#unique-backend-create" title="unique_backend_create ()">unique_backend_create</a>            (<em class="parameter"><code><span class="type">void</span></code></em>);
const <span class="returnvalue">gchar</span> *          <a class="link" href="UniqueBackend.html#unique-backend-get-name" title="unique_backend_get_name ()">unique_backend_get_name</a>          (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="UniqueBackend.html#unique-backend-set-name" title="unique_backend_set_name ()">unique_backend_set_name</a>             (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);
const <span class="returnvalue">gchar</span> *          <a class="link" href="UniqueBackend.html#unique-backend-get-startup-id" title="unique_backend_get_startup_id ()">unique_backend_get_startup_id</a>    (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="UniqueBackend.html#unique-backend-set-startup-id" title="unique_backend_set_startup_id ()">unique_backend_set_startup_id</a>       (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *startup_id</code></em>);
<span class="returnvalue">GdkScreen</span> *            <a class="link" href="UniqueBackend.html#unique-backend-get-screen" title="unique_backend_get_screen ()">unique_backend_get_screen</a>        (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);
<span class="returnvalue">void</span>                <a class="link" href="UniqueBackend.html#unique-backend-set-screen" title="unique_backend_set_screen ()">unique_backend_set_screen</a>           (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code><span class="type">GdkScreen</span> *screen</code></em>);
<span class="returnvalue">guint</span>               <a class="link" href="UniqueBackend.html#unique-backend-get-workspace" title="unique_backend_get_workspace ()">unique_backend_get_workspace</a>        (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);
<span class="returnvalue">gboolean</span>            <a class="link" href="UniqueBackend.html#unique-backend-request-name" title="unique_backend_request_name ()">unique_backend_request_name</a>         (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);
<a class="link" href="UniqueApp.html#UniqueResponse" title="enum UniqueResponse"><span class="returnvalue">UniqueResponse</span></a>      <a class="link" href="UniqueBackend.html#unique-backend-send-message" title="unique_backend_send_message ()">unique_backend_send_message</a>         (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> command_id</code></em>,
                                                         <em class="parameter"><code><a class="link" href="unique-Message-Data.html#UniqueMessageData" title="UniqueMessageData"><span class="type">UniqueMessageData</span></a> *message_data</code></em>,
                                                         <em class="parameter"><code><span class="type">guint</span> time_</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="UniqueBackend.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
  GObject
   +----UniqueBackend
</pre>
</div>
<div class="refsect1">
<a name="UniqueBackend.description"></a><h2>Description</h2>
<p>
<a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> is the base, abstract class implemented by the different
IPC mechanisms used by Unique. Each <a class="link" href="UniqueApp.html" title="UniqueApp"><span class="type">UniqueApp</span></a> instance creates a
<a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> to request the name or to send messages.
</p>
</div>
<div class="refsect1">
<a name="UniqueBackend.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="UniqueBackend-struct"></a><h3>struct UniqueBackend</h3>
<pre class="programlisting">struct UniqueBackend;</pre>
<p>
The <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> structure contains only private data and should only
be accessed using the provided functions.
</p>
</div>
<hr>
<div class="refsect2">
<a name="UniqueBackendClass"></a><h3>struct UniqueBackendClass</h3>
<pre class="programlisting">struct UniqueBackendClass {
  /* vtable, not signals */
  gboolean       (* request_name) (UniqueBackend     *backend);
  UniqueResponse (* send_message) (UniqueBackend     *backend,
                                   gint               command_id,
                                   UniqueMessageData *message_data,
                                   guint              time_);
};
</pre>
<p>
The class that should be implemented by every backend for <a class="link" href="UniqueApp.html" title="UniqueApp"><span class="type">UniqueApp</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="UniqueBackendClass.request-name"></a>request_name</code></em> ()</span></p></td>
<td>This method should be used to request the name for the
instance set using <a class="link" href="UniqueBackend.html#unique-backend-set-name" title="unique_backend_set_name ()"><code class="function">unique_backend_set_name()</code></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="structfield"><code><a name="UniqueBackendClass.send-message"></a>send_message</code></em> ()</span></p></td>
<td>This method should be used to send a message to a running
instance</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-create"></a><h3>unique_backend_create ()</h3>
<pre class="programlisting"><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="returnvalue">UniqueBackend</span></a> *        unique_backend_create            (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>
Creates a <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> using the default backend defined at
compile time. You can override the default backend by setting the
<code class="literal">UNIQUE_BACKEND</code> environment variable with the
name of the desired backend.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> instance. <span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-get-name"></a><h3>unique_backend_get_name ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> *          unique_backend_get_name          (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>FIXME</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-set-name"></a><h3>unique_backend_set_name ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unique_backend_set_name             (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *name</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-get-startup-id"></a><h3>unique_backend_get_startup_id ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> *          unique_backend_get_startup_id    (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>FIXME</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-set-startup-id"></a><h3>unique_backend_set_startup_id ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unique_backend_set_startup_id       (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code>const <span class="type">gchar</span> *startup_id</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>startup_id</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-get-screen"></a><h3>unique_backend_get_screen ()</h3>
<pre class="programlisting"><span class="returnvalue">GdkScreen</span> *            unique_backend_get_screen        (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>FIXME. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-set-screen"></a><h3>unique_backend_set_screen ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                unique_backend_set_screen           (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code><span class="type">GdkScreen</span> *screen</code></em>);</pre>
<p>
FIXME
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>screen</code></em> :</span></p></td>
<td>FIXME</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-get-workspace"></a><h3>unique_backend_get_workspace ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span>               unique_backend_get_workspace        (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);</pre>
<p>
Retrieves the current workspace.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>a <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a workspace number</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-request-name"></a><h3>unique_backend_request_name ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span>            unique_backend_request_name         (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>);</pre>
<p>
Requests the name set using <a class="link" href="UniqueBackend.html#unique-backend-set-name" title="unique_backend_set_name ()"><code class="function">unique_backend_set_name()</code></a> using <em class="parameter"><code>backend</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>a <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if the name was assigned to us, <code class="literal">FALSE</code> if there
already is a registered name</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="unique-backend-send-message"></a><h3>unique_backend_send_message ()</h3>
<pre class="programlisting"><a class="link" href="UniqueApp.html#UniqueResponse" title="enum UniqueResponse"><span class="returnvalue">UniqueResponse</span></a>      unique_backend_send_message         (<em class="parameter"><code><a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a> *backend</code></em>,
                                                         <em class="parameter"><code><span class="type">gint</span> command_id</code></em>,
                                                         <em class="parameter"><code><a class="link" href="unique-Message-Data.html#UniqueMessageData" title="UniqueMessageData"><span class="type">UniqueMessageData</span></a> *message_data</code></em>,
                                                         <em class="parameter"><code><span class="type">guint</span> time_</code></em>);</pre>
<p>
Sends <em class="parameter"><code>command_id</code></em>, and optionally <em class="parameter"><code>message_data</code></em>, to a running instance
using <em class="parameter"><code>backend</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>backend</code></em> :</span></p></td>
<td>a <a class="link" href="UniqueBackend.html" title="UniqueBackend"><span class="type">UniqueBackend</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>command_id</code></em> :</span></p></td>
<td>command to send</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>message_data</code></em> :</span></p></td>
<td>message to send, or <code class="literal">NULL</code>
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>time_</code></em> :</span></p></td>
<td>time of the command emission, or 0 for the current time</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a <a class="link" href="UniqueApp.html#UniqueResponse" title="enum UniqueResponse"><span class="type">UniqueResponse</span></a> value sent by the running instance</td>
</tr>
</tbody>
</table></div>
</div>
</div>
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