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<a href="#libxfce4panel-Version-Information.description" class="shortcut">Description</a>
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<a name="libxfce4panel-Version-Information"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libxfce4panel-Version-Information.top_of_page"></a>Version Information</span></h2>
<p>Version Information — Information about the panel version in use.</p>
</td>
<td valign="top" align="right"></td>
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<div class="refsynopsisdiv">
<a name="libxfce4panel-Version-Information.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <libxfce4panel/libxfce4panel.h>
extern const guint <a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-major-version" title="libxfce4panel_major_version">libxfce4panel_major_version</a>;
extern const guint <a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-minor-version" title="libxfce4panel_minor_version">libxfce4panel_minor_version</a>;
extern const guint <a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-micro-version" title="libxfce4panel_micro_version">libxfce4panel_micro_version</a>;
const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-check-version" title="libxfce4panel_check_version ()">libxfce4panel_check_version</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_major</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_minor</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_micro</code></em>);
#define <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-VERSION:CAPS" title="LIBXFCE4PANEL_VERSION">LIBXFCE4PANEL_VERSION</a>
#define <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MAJOR-VERSION:CAPS" title="LIBXFCE4PANEL_MAJOR_VERSION">LIBXFCE4PANEL_MAJOR_VERSION</a>
#define <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MINOR-VERSION:CAPS" title="LIBXFCE4PANEL_MINOR_VERSION">LIBXFCE4PANEL_MINOR_VERSION</a>
#define <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MICRO-VERSION:CAPS" title="LIBXFCE4PANEL_MICRO_VERSION">LIBXFCE4PANEL_MICRO_VERSION</a>
#define <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-CHECK-VERSION:CAPS" title="LIBXFCE4PANEL_CHECK_VERSION()">LIBXFCE4PANEL_CHECK_VERSION</a> (major,
minor,
micro)
</pre>
</div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.description"></a><h2>Description</h2>
<p>
The panel library provides version information, which could be used
by plugins to handle new API.
</p>
</div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="libxfce4panel-major-version"></a><h3>libxfce4panel_major_version</h3>
<pre class="programlisting">extern const guint libxfce4panel_major_version;
</pre>
<p>
The major version number of the libxfce4panel library (e.g. in
version 4.8.0 this is 4).
</p>
<p>
This variable is in the library, so represents the
libxfce4panel library you have linked against. Contrast with the
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MAJOR-VERSION:CAPS" title="LIBXFCE4PANEL_MAJOR_VERSION"><span class="type">LIBXFCE4PANEL_MAJOR_VERSION</span></a> macro, which represents the major
version of the libxfce4panel headers you have included.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="libxfce4panel-minor-version"></a><h3>libxfce4panel_minor_version</h3>
<pre class="programlisting">extern const guint libxfce4panel_minor_version;
</pre>
<p>
The minor version number of the libxfce4panel library (e.g. in
version 4.8.0 this is 8).
</p>
<p>
This variable is in the library, so represents the
libxfce4panel library you have linked against. Contrast with the
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MINOR-VERSION:CAPS" title="LIBXFCE4PANEL_MINOR_VERSION"><span class="type">LIBXFCE4PANEL_MINOR_VERSION</span></a> macro, which represents the minor
version of the libxfce4panel headers you have included.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="libxfce4panel-micro-version"></a><h3>libxfce4panel_micro_version</h3>
<pre class="programlisting">extern const guint libxfce4panel_micro_version;
</pre>
<p>
The micro version number of the libxfce4panel library (e.g. in
version 4.8.0 this is 0).
</p>
<p>
This variable is in the library, so represents the
libxfce4panel library you have linked against. Contrast with the
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MICRO-VERSION:CAPS" title="LIBXFCE4PANEL_MICRO_VERSION"><span class="type">LIBXFCE4PANEL_MICRO_VERSION</span></a> macro, which represents the micro
version of the libxfce4panel headers you have included.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="libxfce4panel-check-version"></a><h3>libxfce4panel_check_version ()</h3>
<pre class="programlisting">const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * libxfce4panel_check_version (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_major</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_minor</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> required_micro</code></em>);</pre>
<p>
Checks that the libxfce4panel library in use is compatible with
the given version. Generally you would pass in the constants
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MAJOR-VERSION:CAPS" title="LIBXFCE4PANEL_MAJOR_VERSION"><span class="type">LIBXFCE4PANEL_MAJOR_VERSION</span></a>, <a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MINOR-VERSION:CAPS" title="LIBXFCE4PANEL_MINOR_VERSION"><span class="type">LIBXFCE4PANEL_MINOR_VERSION</span></a> and
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MICRO-VERSION:CAPS" title="LIBXFCE4PANEL_MICRO_VERSION"><span class="type">LIBXFCE4PANEL_MICRO_VERSION</span></a> as the three arguments to this
function; that produces a check that the library in use is
compatible with the version of libxfce4panel the extension was
compiled against.
</p>
<p>
</p>
<div class="example">
<a name="id-1.2.2.5.5.5.1"></a><p class="title"><b>Example 1. Checking the runtime version of the Libxfce4panel library</b></p>
<div class="example-contents"><pre class="programlisting">
const gchar *mismatch;
mismatch = libxfce4panel_check_version (LIBXFCE4PANEL_MAJOR_VERSION,
LIBXFCE4PANEL_MINOR_VERSION,
LIBXFCE4PANEL_MICRO_VERSION);
if (G_UNLIKELY (mismatch != NULL))
g_error ("Version mismatch: %s", mismatch);
</pre></div>
</div>
<p><br class="example-break">
</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>required_major</code></em> :</span></p></td>
<td>the required major version.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>required_minor</code></em> :</span></p></td>
<td>the required minor version.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>required_micro</code></em> :</span></p></td>
<td>the required micro version.</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#NULL:CAPS"><code class="literal">NULL</code></a> if the library is compatible with the given version,
or a string describing the version mismatch. The returned
string is owned by the library and must not be freed or
modified by the caller.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_VERSION</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_VERSION ("4.11.0")
</pre>
<p>
String with the full version of the panel.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-MAJOR-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_MAJOR_VERSION</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_MAJOR_VERSION (4)
</pre>
<p>
The major version number of the libxfce4panel library.
Like libxfce4panel_major_version, but from the headers used at
application compile time, rather than from the library
linked against at application run time.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-MINOR-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_MINOR_VERSION</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_MINOR_VERSION (11)
</pre>
<p>
The minor version number of the libxfce4panel library.
Like libxfce4panel_minor_version, but from the headers used at
application compile time, rather than from the library
linked against at application run time.
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-MICRO-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_MICRO_VERSION</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_MICRO_VERSION (0)
</pre>
<p>
The micro version number of the libxfce4panel library.
Like libxfce4panel_micro_version, but from the headers used at
application compile time, rather than from the library
linked against at application run time
</p>
<p class="since">Since 4.8</p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-CHECK-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_CHECK_VERSION()</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_CHECK_VERSION(major,minor,micro)</pre>
<p>
Checks the version of the libxfce4panel library.
</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>major</code></em> :</span></p></td>
<td>the major version number.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>minor</code></em> :</span></p></td>
<td>the minor version number.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>micro</code></em> :</span></p></td>
<td>the micro version number.</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 version of the libxfce4panel header files is
the same as or newer than the passed-in version.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.8</p>
</div>
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