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  24 <a href="#gio-D-Bus-Utilities.synopsis" class="shortcut">Top</a>
  25                    |
  26                   <a href="#gio-D-Bus-Utilities.description" class="shortcut">Description</a>
  27 </td></tr>
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  29 <div class="refentry">
  30 <a name="gio-D-Bus-Utilities"></a><div class="titlepage"></div>
  31 <div class="refnamediv"><table width="100%"><tr>
  32 <td valign="top">
  33 <h2><span class="refentrytitle"><a name="gio-D-Bus-Utilities.top_of_page"></a>D-Bus Utilities</span></h2>
  34 <p>D-Bus Utilities — Various utilities related to D-Bus.</p>
  35 </td>
  36 <td valign="top" align="right"></td>
  37 </tr></table></div>
  38 <div class="refsynopsisdiv">
  39 <a name="gio-D-Bus-Utilities.synopsis"></a><h2>Synopsis</h2>
  40 <pre class="synopsis">
  41 #include &lt;gio/gio.h&gt;
  42
  43 <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *             <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-generate-guid" title="g_dbus_generate_guid ()">g_dbus_generate_guid</a>                (<em class="parameter"><code><span class="type">void</span></code></em>);
  44 <a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-is-guid" title="g_dbus_is_guid ()">g_dbus_is_guid</a>                      (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);
  45 <a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-is-name" title="g_dbus_is_name ()">g_dbus_is_name</a>                      (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);
  46 <a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-is-unique-name" title="g_dbus_is_unique_name ()">g_dbus_is_unique_name</a>               (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);
  47 <a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-is-member-name" title="g_dbus_is_member_name ()">g_dbus_is_member_name</a>               (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);
  48 <a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-is-interface-name" title="g_dbus_is_interface_name ()">g_dbus_is_interface_name</a>            (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);
  49 <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="returnvalue">GVariant</span></a> *          <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-gvalue-to-gvariant" title="g_dbus_gvalue_to_gvariant ()">g_dbus_gvalue_to_gvariant</a>           (<em class="parameter"><code>const <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *gvalue</code></em>,
  50                                                          <em class="parameter"><code>const <a href="./../glib/glib/glib-GVariantType.html#GVariantType"><span class="type">GVariantType</span></a> *type</code></em>);
  51 <span class="returnvalue">void</span>                <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-gvariant-to-gvalue" title="g_dbus_gvariant_to_gvalue ()">g_dbus_gvariant_to_gvalue</a>           (<em class="parameter"><code><a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> *value</code></em>,
  52                                                          <em class="parameter"><code><a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *out_gvalue</code></em>);
  53 </pre>
  54 </div>
  55 <div class="refsect1">
  56 <a name="gio-D-Bus-Utilities.description"></a><h2>Description</h2>
  57 <p>
  58 Various utility routines related to D-Bus.
  59 </p>
  60 </div>
  61 <div class="refsect1">
  62 <a name="gio-D-Bus-Utilities.details"></a><h2>Details</h2>
  63 <div class="refsect2">
  64 <a name="g-dbus-generate-guid"></a><h3>g_dbus_generate_guid ()</h3>
  65 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *             g_dbus_generate_guid                (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
  66 <p>
  67 Generate a D-Bus GUID that can be used with
  68 e.g. <a class="link" href="GDBusConnection.html#g-dbus-connection-new" title="g_dbus_connection_new ()"><code class="function">g_dbus_connection_new()</code></a>.
  69 </p>
  70 <p>
  71 See the D-Bus specification regarding what strings are valid D-Bus
  72 GUID (for example, D-Bus GUIDs are not RFC-4122 compliant).
  73 </p>
  74 <div class="variablelist"><table border="0">
  75 <col align="left" valign="top">
  76 <tbody><tr>
  77 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
  78 <td>A valid D-Bus GUID. Free with <a href="./../glib/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a>.</td>
  79 </tr></tbody>
  80 </table></div>
  81 <p class="since">Since 2.26</p>
  82 </div>
  83 <hr>
  84 <div class="refsect2">
  85 <a name="g-dbus-is-guid"></a><h3>g_dbus_is_guid ()</h3>
  86 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            g_dbus_is_guid                      (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
  87 <p>
  88 Checks if <em class="parameter"><code>string</code></em> is a D-Bus GUID.
  89 </p>
  90 <p>
  91 See the D-Bus specification regarding what strings are valid D-Bus
  92 GUID (for example, D-Bus GUIDs are not RFC-4122 compliant).
  93 </p>
  94 <div class="variablelist"><table border="0">
  95 <col align="left" valign="top">
  96 <tbody>
  97 <tr>
  98 <td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
  99 <td>The string to check.</td>
 100 </tr>
 101 <tr>
 102 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 103 <td>
 104 <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if <em class="parameter"><code>string</code></em> is a guid, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
 105 </tr>
 106 </tbody>
 107 </table></div>
 108 <p class="since">Since 2.26</p>
 109 </div>
 110 <hr>
 111 <div class="refsect2">
 112 <a name="g-dbus-is-name"></a><h3>g_dbus_is_name ()</h3>
 113 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            g_dbus_is_name                      (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
 114 <p>
 115 Checks if <em class="parameter"><code>string</code></em> is a valid D-Bus bus name (either unique or well-known).
 116 </p>
 117 <div class="variablelist"><table border="0">
 118 <col align="left" valign="top">
 119 <tbody>
 120 <tr>
 121 <td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
 122 <td>The string to check.</td>
 123 </tr>
 124 <tr>
 125 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 126 <td>
 127 <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if valid, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
 128 </tr>
 129 </tbody>
 130 </table></div>
 131 <p class="since">Since 2.26</p>
 132 </div>
 133 <hr>
 134 <div class="refsect2">
 135 <a name="g-dbus-is-unique-name"></a><h3>g_dbus_is_unique_name ()</h3>
 136 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            g_dbus_is_unique_name               (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
 137 <p>
 138 Checks if <em class="parameter"><code>string</code></em> is a valid D-Bus unique bus name.
 139 </p>
 140 <div class="variablelist"><table border="0">
 141 <col align="left" valign="top">
 142 <tbody>
 143 <tr>
 144 <td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
 145 <td>The string to check.</td>
 146 </tr>
 147 <tr>
 148 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 149 <td>
 150 <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if valid, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
 151 </tr>
 152 </tbody>
 153 </table></div>
 154 <p class="since">Since 2.26</p>
 155 </div>
 156 <hr>
 157 <div class="refsect2">
 158 <a name="g-dbus-is-member-name"></a><h3>g_dbus_is_member_name ()</h3>
 159 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            g_dbus_is_member_name               (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
 160 <p>
 161 Checks if <em class="parameter"><code>string</code></em> is a valid D-Bus member (e.g. signal or method) name.
 162 </p>
 163 <div class="variablelist"><table border="0">
 164 <col align="left" valign="top">
 165 <tbody>
 166 <tr>
 167 <td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
 168 <td>The string to check.</td>
 169 </tr>
 170 <tr>
 171 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 172 <td>
 173 <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if valid, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
 174 </tr>
 175 </tbody>
 176 </table></div>
 177 <p class="since">Since 2.26</p>
 178 </div>
 179 <hr>
 180 <div class="refsect2">
 181 <a name="g-dbus-is-interface-name"></a><h3>g_dbus_is_interface_name ()</h3>
 182 <pre class="programlisting"><a href="./../glib/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>            g_dbus_is_interface_name            (<em class="parameter"><code>const <a href="./../glib/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *string</code></em>);</pre>
 183 <p>
 184 Checks if <em class="parameter"><code>string</code></em> is a valid D-Bus interface name.
 185 </p>
 186 <div class="variablelist"><table border="0">
 187 <col align="left" valign="top">
 188 <tbody>
 189 <tr>
 190 <td><p><span class="term"><em class="parameter"><code>string</code></em> :</span></p></td>
 191 <td>The string to check.</td>
 192 </tr>
 193 <tr>
 194 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 195 <td>
 196 <a href="./../glib/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if valid, <a href="./../glib/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
 197 </tr>
 198 </tbody>
 199 </table></div>
 200 <p class="since">Since 2.26</p>
 201 </div>
 202 <hr>
 203 <div class="refsect2">
 204 <a name="g-dbus-gvalue-to-gvariant"></a><h3>g_dbus_gvalue_to_gvariant ()</h3>
 205 <pre class="programlisting"><a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="returnvalue">GVariant</span></a> *          g_dbus_gvalue_to_gvariant           (<em class="parameter"><code>const <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *gvalue</code></em>,
 206                                                          <em class="parameter"><code>const <a href="./../glib/glib/glib-GVariantType.html#GVariantType"><span class="type">GVariantType</span></a> *type</code></em>);</pre>
 207 <p>
 208 Converts a <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to a <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> of the type indicated by the <em class="parameter"><code>type</code></em> parameter.
 209 </p>
 210 <p>
 211 The conversion is using the following rules:
 212 </p>
 213 <div class="table">
 214 <a name="id864450"></a><p class="title"><b>Table 4. <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> / <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> conversion rules</b></p>
 215 <div class="table-contents"><table summary="GValue / GVariant conversion rules" border="1">
 216 <colgroup>
 217 <col>
 218 <col>
 219 </colgroup>
 220 <thead><tr>
 221 <th align="left">If the <a href="./../gobject/gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> for <em class="parameter"><code>gvalue</code></em> is...</th>
 222 <th align="left">... then <em class="parameter"><code>type</code></em> must be</th>
 223 </tr></thead>
 224 <tbody>
 225 <tr>
 226 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-STRING:CAPS"><span class="type">G_TYPE_STRING</span></a></td>
 227 <td align="left">
 228 <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-STRING:CAPS">'s'</a>, <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-OBJECT-PATH:CAPS">'o'</a>, <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-SIGNATURE:CAPS">'g'</a> or <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-BYTESTRING:CAPS">'ay'</a>
 229 </td>
 230 </tr>
 231 <tr>
 232 <td align="left"><a href="./../gobject/gobject/gobject-Boxed-Types.html#G-TYPE-STRV:CAPS"><span class="type">G_TYPE_STRV</span></a></td>
 233 <td align="left">
 234 <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-STRING-ARRAY:CAPS">'as'</a>, <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-OBJECT-PATH-ARRAY:CAPS">'ao'</a> or <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-BYTESTRING-ARRAY:CAPS">'aay'</a>
 235 </td>
 236 </tr>
 237 <tr>
 238 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-BOOLEAN:CAPS"><span class="type">G_TYPE_BOOLEAN</span></a></td>
 239 <td align="left"><a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-BOOLEAN:CAPS">'b'</a></td>
 240 </tr>
 241 <tr>
 242 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-UCHAR:CAPS"><span class="type">G_TYPE_UCHAR</span></a></td>
 243 <td align="left"><a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-BYTE:CAPS">'y'</a></td>
 244 </tr>
 245 <tr>
 246 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-INT:CAPS"><span class="type">G_TYPE_INT</span></a></td>
 247 <td align="left">
 248 <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-INT32:CAPS">'i'</a> or <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-INT16:CAPS">'n'</a>
 249 </td>
 250 </tr>
 251 <tr>
 252 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-UINT:CAPS"><span class="type">G_TYPE_UINT</span></a></td>
 253 <td align="left">
 254 <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-UINT32:CAPS">'u'</a> or <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-UINT16:CAPS">'q'</a>
 255 </td>
 256 </tr>
 257 <tr>
 258 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-INT64:CAPS"><span class="type">G_TYPE_INT64</span></a></td>
 259 <td align="left"><a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-INT64:CAPS">'x'</a></td>
 260 </tr>
 261 <tr>
 262 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-UINT64:CAPS"><span class="type">G_TYPE_UINT64</span></a></td>
 263 <td align="left"><a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-UINT64:CAPS">'t'</a></td>
 264 </tr>
 265 <tr>
 266 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-DOUBLE:CAPS"><span class="type">G_TYPE_DOUBLE</span></a></td>
 267 <td align="left"><a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-DOUBLE:CAPS">'d'</a></td>
 268 </tr>
 269 <tr>
 270 <td align="left"><a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-VARIANT:CAPS"><span class="type">G_TYPE_VARIANT</span></a></td>
 271 <td align="left">Any <a href="./../glib/glib/glib-GVariantType.html#GVariantType"><span class="type">GVariantType</span></a>
 272 </td>
 273 </tr>
 274 </tbody>
 275 </table></div>
 276 </div>
 277 <p><br class="table-break">
 278 This can fail if e.g. <em class="parameter"><code>gvalue</code></em> is of type <a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-STRING:CAPS"><span class="type">G_TYPE_STRING</span></a> and <em class="parameter"><code>type</code></em>
 279 is <a href="./../glib/glib/glib-GVariantType.html#G-VARIANT-TYPE-INT32:CAPS">'i'</a>. It will
 280 also fail for any <a href="./../gobject/gobject/gobject-Type-Information.html#GType"><span class="type">GType</span></a> (including e.g. <a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-OBJECT:CAPS"><span class="type">G_TYPE_OBJECT</span></a> and
 281 <a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-BOXED:CAPS"><span class="type">G_TYPE_BOXED</span></a> derived-types) not in the table above.
 282 </p>
 283 <p>
 284 Note that if <em class="parameter"><code>gvalue</code></em> is of type <a href="./../gobject/gobject/gobject-Type-Information.html#G-TYPE-VARIANT:CAPS"><span class="type">G_TYPE_VARIANT</span></a> and its value is
 285 <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, the <span class="emphasis"><em>empty</em></span> <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> instance (never
 286 <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>) for <em class="parameter"><code>type</code></em> is returned (e.g. 0 for scalar types, the empty
 287 string for string types, <code class="literal">'/'</code> for object path
 288 types, the empty array for any array type and so on).
 289 </p>
 290 <p>
 291 See the <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-gvariant-to-gvalue" title="g_dbus_gvariant_to_gvalue ()"><code class="function">g_dbus_gvariant_to_gvalue()</code></a> function for how to convert a
 292 <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> to a <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
 293 </p>
 294 <div class="variablelist"><table border="0">
 295 <col align="left" valign="top">
 296 <tbody>
 297 <tr>
 298 <td><p><span class="term"><em class="parameter"><code>gvalue</code></em> :</span></p></td>
 299 <td>A <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to convert to a <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a>.</td>
 300 </tr>
 301 <tr>
 302 <td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
 303 <td>A <a href="./../glib/glib/glib-GVariantType.html#GVariantType"><span class="type">GVariantType</span></a>.</td>
 304 </tr>
 305 <tr>
 306 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
 307 <td>A <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> (never floating) of <a href="./../glib/glib/glib-GVariantType.html#GVariantType"><span class="type">GVariantType</span></a>
 308 <em class="parameter"><code>type</code></em> holding the data from <em class="parameter"><code>gvalue</code></em> or <a href="./../glib/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> in case of
 309 failure. Free with <a href="./../glib/glib/glib-GVariant.html#g-variant-unref"><code class="function">g_variant_unref()</code></a>.</td>
 310 </tr>
 311 </tbody>
 312 </table></div>
 313 <p class="since">Since 2.30</p>
 314 </div>
 315 <hr>
 316 <div class="refsect2">
 317 <a name="g-dbus-gvariant-to-gvalue"></a><h3>g_dbus_gvariant_to_gvalue ()</h3>
 318 <pre class="programlisting"><span class="returnvalue">void</span>                g_dbus_gvariant_to_gvalue           (<em class="parameter"><code><a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> *value</code></em>,
 319                                                          <em class="parameter"><code><a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *out_gvalue</code></em>);</pre>
 320 <p>
 321 Converts a <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a> to a <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>. If <em class="parameter"><code>value</code></em> is floating, it is consumed.
 322 </p>
 323 <p>
 324 The rules specified in the <a class="link" href="gio-D-Bus-Utilities.html#g-dbus-gvalue-to-gvariant" title="g_dbus_gvalue_to_gvariant ()"><code class="function">g_dbus_gvalue_to_gvariant()</code></a> function are
 325 used - this function is essentially its reverse form.
 326 </p>
 327 <p>
 328 The conversion never fails - a valid <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> is always returned in
 329 <em class="parameter"><code>out_gvalue</code></em>.
 330 </p>
 331 <div class="variablelist"><table border="0">
 332 <col align="left" valign="top">
 333 <tbody>
 334 <tr>
 335 <td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
 336 <td>A <a href="./../glib/glib/glib-GVariant.html#GVariant"><span class="type">GVariant</span></a>.</td>
 337 </tr>
 338 <tr>
 339 <td><p><span class="term"><em class="parameter"><code>out_gvalue</code></em> :</span></p></td>
 340 <td>Return location pointing to a zero-filled (uninitialized) <a href="./../gobject/gobject/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
 341 </tr>
 342 </tbody>
 343 </table></div>
 344 <p class="since">Since 2.30</p>
 345 </div>
 346 </div>
 347 </div>
 348 <div class="footer">
 349 <hr>
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