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<a name="libgwymodule-gwymodule-volume"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="libgwymodule-gwymodule-volume.top_of_page"></a>gwymodule-volume</span></h2>
<p>gwymodule-volume — Volume data processing modules</p>
</td>
<td valign="top" align="right"></td>
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<div class="refsynopsisdiv">
<a name="libgwymodule-gwymodule-volume.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <libgwymodule/gwymodule.h>
<span class="returnvalue">void</span> (<a class="link" href="libgwymodule-gwymodule-volume.html#GwyVolumeFunc" title="GwyVolumeFunc ()">*GwyVolumeFunc</a>) (<em class="parameter"><code><a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a> *data</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>,
<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
<a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-register" title="gwy_volume_func_register ()">gwy_volume_func_register</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymodule-volume.html#GwyVolumeFunc" title="GwyVolumeFunc ()"><span class="type">GwyVolumeFunc</span></a> func</code></em>,
<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *menu_path</code></em>,
<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *stock_id</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>,
<em class="parameter"><code><a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> sens_mask</code></em>,
<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tooltip</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-run" title="gwy_volume_func_run ()">gwy_volume_func_run</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a> *data</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>);
<a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-exists" title="gwy_volume_func_exists ()">gwy_volume_func_exists</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
<a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="returnvalue">GwyRunType</span></a> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-get-run-types" title="gwy_volume_func_get_run_types ()">gwy_volume_func_get_run_types</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-get-menu-path" title="gwy_volume_func_get_menu_path ()">gwy_volume_func_get_menu_path</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-get-stock-id" title="gwy_volume_func_get_stock_id ()">gwy_volume_func_get_stock_id</a> (<em class="parameter"><code>const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
const <a href="http://developer.gnome.org/doc/API/2.0/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-get-tooltip" title="gwy_volume_func_get_tooltip ()">gwy_volume_func_get_tooltip</a> (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-get-sensitivity-mask" title="gwy_volume_func_get_sensitivity_mask ()">gwy_volume_func_get_sensitivity_mask</a>
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-foreach" title="gwy_volume_func_foreach ()">gwy_volume_func_foreach</a> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GFunc"><span class="type">GFunc</span></a> function</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libgwymodule-gwymodule-volume.description"></a><h2>Description</h2>
<p>
Volume data processing modules implement function processing volume data
represented with <a href="../libgwyprocess/GwyBrick.html"><span class="type">GwyBrick</span></a>. They reigster functions that get a
<a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a> with data and either modify it or create a new data from it.
In this regard, they are quite similar to regular (two-dimensional) data
processing functions but they live in separate menus, toolbars, etc.
</p>
<p>
Volume data processing functions were introduced in version 2.32.
</p>
</div>
<div class="refsect1">
<a name="libgwymodule-gwymodule-volume.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GwyVolumeFunc"></a><h3>GwyVolumeFunc ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> (*GwyVolumeFunc) (<em class="parameter"><code><a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a> *data</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
The type of volume data processing function.
</p>
<div class="variablelist"><table border="0" class="variablelist">
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<col>
</colgroup>
<tbody>
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<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>The data container to operate on.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>run</code></em> :</span></p></td>
<td>Run mode.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>Function name from as registered with <a class="link" href="libgwymodule-gwymodule-volume.html#gwy-volume-func-register" title="gwy_volume_func_register ()"><code class="function">gwy_volume_func_register()</code></a>
(single-function modules can safely ignore this argument).</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-register"></a><h3>gwy_volume_func_register ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gwy_volume_func_register (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymodule-volume.html#GwyVolumeFunc" title="GwyVolumeFunc ()"><span class="type">GwyVolumeFunc</span></a> func</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *menu_path</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *stock_id</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="type">guint</span></a> sens_mask</code></em>,
<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *tooltip</code></em>);</pre>
<p>
Registers a volume data processing function.
</p>
<p>
Note: the string arguments are not copied as modules are not expected to
vanish. If they are constructed (non-constant) strings, do not free them.
Should modules ever become unloadable they will get a chance to clean-up.
</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>name</code></em> :</span></p></td>
<td>Name of function to register. It should be a valid identifier and
if a module registers only one function, module and function names
should be the same.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>func</code></em> :</span></p></td>
<td>The function itself.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>menu_path</code></em> :</span></p></td>
<td>Menu path under Volume Data menu. The menu path should be
marked translatabe, but passed untranslated (to allow merging
of translated and untranslated submenus).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>stock_id</code></em> :</span></p></td>
<td>Stock icon id for toolbar.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>run</code></em> :</span></p></td>
<td>Supported run modes. Volume data processing functions can have two run
modes: <a class="link" href="libgwymodule-gwymoduleenums.html#GWY-RUN-IMMEDIATE:CAPS"><code class="literal">GWY_RUN_IMMEDIATE</code></a> (no questions asked) and
<a class="link" href="libgwymodule-gwymoduleenums.html#GWY-RUN-INTERACTIVE:CAPS"><code class="literal">GWY_RUN_INTERACTIVE</code></a> (a modal dialog with parameters).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>sens_mask</code></em> :</span></p></td>
<td>Sensitivity mask (a combination of <a href="../libgwyapp/libgwyapp-menu.html#GwyMenuSensFlags"><span class="type">GwyMenuSensFlags</span></a> flags).
Usually it contains <a href="../libgwyapp/libgwyapp-menu.html#GWY-MENU-FLAG-DATA:CAPS"><span class="type">GWY_MENU_FLAG_DATA</span></a>, possibly other
requirements.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>tooltip</code></em> :</span></p></td>
<td>Tooltip for this function.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>Normally <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a>; <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> on failure.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-run"></a><h3>gwy_volume_func_run ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gwy_volume_func_run (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>,
<em class="parameter"><code><a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a> *data</code></em>,
<em class="parameter"><code><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="type">GwyRunType</span></a> run</code></em>);</pre>
<p>
Runs a volume data processing function identified by <em class="parameter"><code>name</code></em>.
</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>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td>
<td>Data (a <a href="../libgwyddion/GwyContainer.html"><span class="type">GwyContainer</span></a>).</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>run</code></em> :</span></p></td>
<td>How the function should be run.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-exists"></a><h3>gwy_volume_func_exists ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gwy_volume_func_exists (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Checks whether a volume data processing function exists.
</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>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if function <em class="parameter"><code>name</code></em> exists, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-get-run-types"></a><h3>gwy_volume_func_get_run_types ()</h3>
<pre class="programlisting"><a class="link" href="libgwymodule-gwymoduleenums.html#GwyRunType" title="enum GwyRunType"><span class="returnvalue">GwyRunType</span></a> gwy_volume_func_get_run_types (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Returns run modes supported by a volume data processing function.
</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>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The run mode bit mask.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-get-menu-path"></a><h3>gwy_volume_func_get_menu_path ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gwy_volume_func_get_menu_path (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Returns the menu path of a volume data processing function.
</p>
<p>
The returned menu path is only the tail part registered by the function,
i.e., without any leading "/Volume Data".
</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>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The menu path. The returned string is owned by the module.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
</div>
<hr>
<div class="refsect2">
<a name="gwy-volume-func-get-stock-id"></a><h3>gwy_volume_func_get_stock_id ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gwy_volume_func_get_stock_id (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Gets stock icon id of a volume data processing function.
</p>
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The stock icon id. The returned string is owned by the module.</td>
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<p class="since">Since 2.32</p>
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<div class="refsect2">
<a name="gwy-volume-func-get-tooltip"></a><h3>gwy_volume_func_get_tooltip ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gwy_volume_func_get_tooltip (<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Gets tooltip for a volume data processing function.
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The tooltip. The returned string is owned by the module.</td>
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<p class="since">Since 2.32</p>
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<div class="refsect2">
<a name="gwy-volume-func-get-sensitivity-mask"></a><h3>gwy_volume_func_get_sensitivity_mask ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#guint"><span class="returnvalue">guint</span></a> gwy_volume_func_get_sensitivity_mask
(<em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *name</code></em>);</pre>
<p>
Gets menu sensititivy mask for a volume data processing function.
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<td><p><span class="term"><em class="parameter"><code>name</code></em> :</span></p></td>
<td>Volume data processing function name.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The menu item sensitivity mask (a combination of <a href="../libgwyapp/libgwyapp-menu.html#GwyMenuSensFlags"><span class="type">GwyMenuSensFlags</span></a>
flags).</td>
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</table></div>
<p class="since">Since 2.32</p>
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<div class="refsect2">
<a name="gwy-volume-func-foreach"></a><h3>gwy_volume_func_foreach ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gwy_volume_func_foreach (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GFunc"><span class="type">GFunc</span></a> function</code></em>,
<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>
Calls a function for each volume function.
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<td><p><span class="term"><em class="parameter"><code>function</code></em> :</span></p></td>
<td>Function to run for each volume function. It will get function
name (constant string owned by module system) as its first
argument, <em class="parameter"><code>user_data</code></em> as the second argument.</td>
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<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td>Data to pass to <em class="parameter"><code>function</code></em>.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 2.32</p>
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