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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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                  <a href="#libxfce4panel-Panel-Plugin-Register-Macros.description" class="shortcut">Description</a>
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<div class="refentry">
<a name="libxfce4panel-Panel-Plugin-Register-Macros"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="libxfce4panel-Panel-Plugin-Register-Macros.top_of_page"></a>Panel Plugin Register Macros</span></h2>
<p>Panel Plugin Register Macros — Register panel plugins that are compiled as modules.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="libxfce4panel-Panel-Plugin-Register-Macros.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include &lt;libxfce4panel/libxfce4panel.h&gt;

<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            (<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginCheck" title="XfcePanelPluginCheck ()">*XfcePanelPluginCheck</a>)             (<em class="parameter"><code><a href="../gdk2/GdkScreen.html"><span class="type">GdkScreen</span></a> *screen</code></em>);
<span class="returnvalue">void</span>                (<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginFunc" title="XfcePanelPluginFunc ()">*XfcePanelPluginFunc</a>)              (<em class="parameter"><code><a class="link" href="XfcePanelPlugin.html" title="XfcePanelPlugin"><span class="type">XfcePanelPlugin</span></a> *plugin</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            (<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginPreInit" title="XfcePanelPluginPreInit ()">*XfcePanelPluginPreInit</a>)           (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> argc</code></em>,
                                                         <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **argv</code></em>);
#define             <a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XFCE-PANEL-PLUGIN-REGISTER:CAPS" title="XFCE_PANEL_PLUGIN_REGISTER()">XFCE_PANEL_PLUGIN_REGISTER</a>          (construct_func)
#define             <a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XFCE-PANEL-PLUGIN-REGISTER-WITH-CHECK:CAPS" title="XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK()">XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK</a>(construct_func,
                                                         check_func)
#define             <a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XFCE-PANEL-PLUGIN-REGISTER-FULL:CAPS" title="XFCE_PANEL_PLUGIN_REGISTER_FULL()">XFCE_PANEL_PLUGIN_REGISTER_FULL</a>     (construct_func,
                                                         preinit_func,
                                                         check_func)
</pre>
</div>
<div class="refsect1">
<a name="libxfce4panel-Panel-Plugin-Register-Macros.description"></a><h2>Description</h2>
<p>
Macros to register panel plugins that are compiled as modules. Internal or
external is defined by the boolean key <code class="varname">X-XFCE-Internal</code>
in the plugin's .desktop file.
</p>
</div>
<div class="refsect1">
<a name="libxfce4panel-Panel-Plugin-Register-Macros.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="XfcePanelPluginCheck"></a><h3>XfcePanelPluginCheck ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            (*XfcePanelPluginCheck)             (<em class="parameter"><code><a href="../gdk2/GdkScreen.html"><span class="type">GdkScreen</span></a> *screen</code></em>);</pre>
<p>
Callback function that is run before creating a plugin. It should return
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if the plugin is not available for whatever reason. The function
can be given as argument to one of the registration macros.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>screen</code></em> :</span></p></td>
<td>the <a href="../gdk2/GdkScreen.html"><span class="type">GdkScreen</span></a> the panel is running on</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the plugin can be started, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="XfcePanelPluginFunc"></a><h3>XfcePanelPluginFunc ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>                (*XfcePanelPluginFunc)              (<em class="parameter"><code><a class="link" href="XfcePanelPlugin.html" title="XfcePanelPlugin"><span class="type">XfcePanelPlugin</span></a> *plugin</code></em>);</pre>
<p>
Callback function to create the plugin contents. It should be given as
the argument to the registration macros.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>plugin</code></em> :</span></p></td>
<td>an <a class="link" href="XfcePanelPlugin.html" title="XfcePanelPlugin"><span class="type">XfcePanelPlugin</span></a>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="XfcePanelPluginPreInit"></a><h3>XfcePanelPluginPreInit ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            (*XfcePanelPluginPreInit)           (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="type">gint</span></a> argc</code></em>,
                                                         <em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> **argv</code></em>);</pre>
<p>
Callback function that is run in an external plugin before <a href="http://developer.gnome.org/gtk2/gtk3-General.html#gtk-init"><code class="function">gtk_init()</code></a>. It
should return <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> if the plugin is not available for whatever reason.
The function can be given as argument to one of the registration macros.
</p>
<p>
The main purpose of this callback is to allow multithreaded plugins to call
<a href="http://library.gnome.org/devel/glib/unstable/glib-Deprecated-Thread-APIs.html#g-thread-init"><code class="function">g_thread_init()</code></a>.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>argc</code></em> :</span></p></td>
<td>number of arguments to the plugin</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>argv</code></em> :</span></p></td>
<td>argument array</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.6</p>
</div>
<hr>
<div class="refsect2">
<a name="XFCE-PANEL-PLUGIN-REGISTER:CAPS"></a><h3>XFCE_PANEL_PLUGIN_REGISTER()</h3>
<pre class="programlisting">#define             XFCE_PANEL_PLUGIN_REGISTER(construct_func)</pre>
<p>
Register a panel plugin using a construct function. This is the
simplest way to register a panel plugin.
The <em class="parameter"><code>construct_func</code></em> is called everytime a plugin is created.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>construct_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginFunc" title="XfcePanelPluginFunc ()"><span class="type">XfcePanelPluginFunc</span></a> function.</td>
</tr></tbody>
</table></div>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="XFCE-PANEL-PLUGIN-REGISTER-WITH-CHECK:CAPS"></a><h3>XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK()</h3>
<pre class="programlisting">#define             XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK(construct_func, check_func)</pre>
<p>
Register a panel plugin using a construct function. The <em class="parameter"><code>check_func</code></em>
will be called before the plugin is created. If this function returns
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>, the plugin won't be added to the panel. For proper feedback,
you are responsible for showing a dialog why the plugin is not added
to the panel.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
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<td><p><span class="term"><em class="parameter"><code>construct_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginFunc" title="XfcePanelPluginFunc ()"><span class="type">XfcePanelPluginFunc</span></a> function.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>check_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginCheck" title="XfcePanelPluginCheck ()"><span class="type">XfcePanelPluginCheck</span></a> function.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="XFCE-PANEL-PLUGIN-REGISTER-FULL:CAPS"></a><h3>XFCE_PANEL_PLUGIN_REGISTER_FULL()</h3>
<pre class="programlisting">#define             XFCE_PANEL_PLUGIN_REGISTER_FULL(construct_func, preinit_func, check_func)</pre>
<p>
Same as calling <a class="link" href="libxfce4panel-GObject-Oriented-Panel-Plugin-Registers-Macros.html#XFCE-PANEL-DEFINE-PREINIT-FUNC:CAPS" title="XFCE_PANEL_DEFINE_PREINIT_FUNC()"><span class="type">XFCE_PANEL_DEFINE_PREINIT_FUNC</span></a> and
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XFCE-PANEL-PLUGIN-REGISTER-WITH-CHECK:CAPS" title="XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK()"><span class="type">XFCE_PANEL_PLUGIN_REGISTER_WITH_CHECK</span></a>. See those macros
for more information.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>construct_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginFunc" title="XfcePanelPluginFunc ()"><span class="type">XfcePanelPluginFunc</span></a> function.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>preinit_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginPreInit" title="XfcePanelPluginPreInit ()"><span class="type">XfcePanelPluginPreInit</span></a> function.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>check_func</code></em> :</span></p></td>
<td>name of the function that points to an
<a class="link" href="libxfce4panel-Panel-Plugin-Register-Macros.html#XfcePanelPluginCheck" title="XfcePanelPluginCheck ()"><span class="type">XfcePanelPluginCheck</span></a> function.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.8</p>
</div>
</div>
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