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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Version Information: xfce4-panel Reference Manual</title>
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<a href="#libxfce4panel-Version-Information.description" class="shortcut">Description</a></span>
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<div class="refentry">
<a name="libxfce4panel-Version-Information"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<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 class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_proto_type">
<col class="functions_proto_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">const <span class="returnvalue">gchar</span> *
</td>
<td class="function_name">
<a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-check-version" title="libxfce4panel_check_version ()">libxfce4panel_check_version</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name">
<a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-CHECK-VERSION:CAPS" title="LIBXFCE4PANEL_CHECK_VERSION()">LIBXFCE4PANEL_CHECK_VERSION</a><span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="other_proto_type">
<col class="other_proto_name">
</colgroup>
<tbody>
<tr>
<td class="variable_type">extern const guint </td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-major-version" title="libxfce4panel_major_version">libxfce4panel_major_version</a></td>
</tr>
<tr>
<td class="variable_type">extern const guint </td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-minor-version" title="libxfce4panel_minor_version">libxfce4panel_minor_version</a></td>
</tr>
<tr>
<td class="variable_type">extern const guint </td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#libxfce4panel-micro-version" title="libxfce4panel_micro_version">libxfce4panel_micro_version</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-VERSION:CAPS" title="LIBXFCE4PANEL_VERSION">LIBXFCE4PANEL_VERSION</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MAJOR-VERSION:CAPS" title="LIBXFCE4PANEL_MAJOR_VERSION">LIBXFCE4PANEL_MAJOR_VERSION</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MINOR-VERSION:CAPS" title="LIBXFCE4PANEL_MINOR_VERSION">LIBXFCE4PANEL_MINOR_VERSION</a></td>
</tr>
<tr>
<td class="define_keyword">#define</td>
<td class="function_name"><a class="link" href="libxfce4panel-Version-Information.html#LIBXFCE4PANEL-MICRO-VERSION:CAPS" title="LIBXFCE4PANEL_MICRO_VERSION">LIBXFCE4PANEL_MICRO_VERSION</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include <libxfce4panel/libxfce4panel.h>
</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.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="libxfce4panel-check-version"></a><h3>libxfce4panel_check_version ()</h3>
<pre class="programlisting">const <span class="returnvalue">gchar</span> *
libxfce4panel_check_version (<em class="parameter"><code><span class="type">guint</span> required_major</code></em>,
<em class="parameter"><code><span class="type">guint</span> required_minor</code></em>,
<em class="parameter"><code><span class="type">guint</span> 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>
<div class="example">
<a name="id-1.2.2.7.2.5"></a><p class="title"><b>Example 1. Checking the runtime version of the Libxfce4panel library</b></p>
<div class="example-contents">
<table class="listing_frame" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<td class="listing_lines" align="right"><pre>1
2
3
4
5
6</pre></td>
<td class="listing_code"><pre class="programlisting"><span class="k">const</span><span class="w"> </span><span class="n">gchar</span><span class="w"> </span><span class="o">*</span><span class="n">mismatch</span><span class="p">;</span>
<span class="n">mismatch</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">libxfce4panel_check_version</span><span class="w"> </span><span class="p">(</span><span class="n">LIBXFCE4PANEL_MAJOR_VERSION</span><span class="p">,</span>
<span class="w"> </span><span class="n">LIBXFCE4PANEL_MINOR_VERSION</span><span class="p">,</span>
<span class="w"> </span><span class="n">LIBXFCE4PANEL_MICRO_VERSION</span><span class="p">);</span>
<span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="n">G_UNLIKELY</span><span class="w"> </span><span class="p">(</span><span class="n">mismatch</span><span class="w"> </span><span class="o">!=</span><span class="w"> </span><span class="nb">NULL</span><span class="p">))</span>
<span class="w"> </span><span class="n">g_error</span><span class="w"> </span><span class="p">(</span><span class="s">"Version mismatch: %s"</span><span class="p">,</span><span class="w"> </span><span class="n">mismatch</span><span class="p">);</span></pre></td>
</tr>
</tbody>
</table>
</div>
</div>
<br class="example-break"><div class="refsect3">
<a name="libxfce4panel-check-version.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>required_major</p></td>
<td class="parameter_description"><p>the required major version.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>required_minor</p></td>
<td class="parameter_description"><p>the required minor version.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>required_micro</p></td>
<td class="parameter_description"><p>the required micro version.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="libxfce4panel-check-version.returns"></a><h4>Returns</h4>
<p> <code class="literal">NULL</code> 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.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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="refsect3">
<a name="LIBXFCE4PANEL-CHECK-VERSION.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" 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>major</p></td>
<td class="parameter_description"><p>the major version number.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>minor</p></td>
<td class="parameter_description"><p>the minor version number.</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>micro</p></td>
<td class="parameter_description"><p>the micro version number.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="LIBXFCE4PANEL-CHECK-VERSION.returns"></a><h4>Returns</h4>
<p> <code class="literal">TRUE</code> if the version of the libxfce4panel header files is
the same as or newer than the passed-in version.</p>
</div>
<p class="since">Since: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></p>
</div>
</div>
<div class="refsect1">
<a name="libxfce4panel-Version-Information.other_details"></a><h2>Types and Values</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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></p>
</div>
<hr>
<div class="refsect2">
<a name="LIBXFCE4PANEL-VERSION:CAPS"></a><h3>LIBXFCE4PANEL_VERSION</h3>
<pre class="programlisting">#define LIBXFCE4PANEL_VERSION ("4.20.6")
</pre>
<p>String with the full version of the panel.</p>
<p class="since">Since: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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 (20)
</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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></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 (6)
</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: <a class="link" href="api-index-4-8.html#api-index-4.8">4.8</a></p>
</div>
</div>
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