doc/gconf/html/gconf-gconf-backend.html

   1 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
   2 <html>
   3 <head>
   4 <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
   5 <title>gconf-backend</title>
   6 <meta name="generator" content="DocBook XSL Stylesheets V1.73.2">
   7 <link rel="start" href="index.html" title="GConf Reference Manual">
   8 <link rel="up" href="ch01.html" title="Using the GConf library">
   9 <link rel="prev" href="gconf-GConfClient.html" title="GConfClient">
  10 <link rel="next" href="gconf-gconf-engine.html" title="GConfEngine">
  11 <meta name="generator" content="GTK-Doc V1.10 (XML mode)">
  12 <link rel="stylesheet" href="style.css" type="text/css">
  13 <link rel="chapter" href="ch01.html" title="Using the GConf library">
  14 </head>
  15 <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
  16 <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
  17 <tr valign="middle">
  18 <td><a accesskey="p" href="gconf-GConfClient.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
  19 <td><a accesskey="u" href="ch01.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
  20 <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
  21 <th width="100%" align="center">GConf Reference Manual</th>
  22 <td><a accesskey="n" href="gconf-gconf-engine.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
  23 </tr>
  24 <tr><td colspan="5" class="shortcuts"><nobr><a href="#id2598997" class="shortcut">Top</a>
  25                   &#160;|&#160;
  26                   <a href="#id2582576" class="shortcut">Description</a></nobr></td></tr>
  27 </table>
  28 <div class="refentry" lang="en">
  29 <a name="gconf-gconf-backend"></a><div class="titlepage"></div>
  30 <div class="refnamediv"><table width="100%"><tr>
  31 <td valign="top">
  32 <h2>
  33 <a name="id2598997"></a><span class="refentrytitle">gconf-backend</span>
  34 </h2>
  35 <p>gconf-backend</p>
  36 </td>
  37 <td valign="top" align="right"></td>
  38 </tr></table></div>
  39 <div class="refsynopsisdiv">
  40 <h2>Synopsis</h2>
  41 <pre class="synopsis">
  42
  43
  44
  45                     <a class="link" href="gconf-gconf-backend.html#GConfBackendVTable">GConfBackendVTable</a>;
  46                     <a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a>;
  47 gchar*              <a class="link" href="gconf-gconf-backend.html#gconf-address-backend">gconf_address_backend</a>               (const gchar *address);
  48 gchar*              <a class="link" href="gconf-gconf-backend.html#gconf-address-resource">gconf_address_resource</a>              (const gchar *address);
  49 gchar*              <a class="link" href="gconf-gconf-backend.html#gconf-backend-file">gconf_backend_file</a>                  (const gchar *address);
  50 <a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a>*       <a class="link" href="gconf-gconf-backend.html#gconf-get-backend">gconf_get_backend</a>                   (const gchar *address,
  51                                                          GError **err);
  52 void                <a class="link" href="gconf-gconf-backend.html#gconf-backend-ref">gconf_backend_ref</a>                   (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend);
  53 void                <a class="link" href="gconf-gconf-backend.html#gconf-backend-unref">gconf_backend_unref</a>                 (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend);
  54 <a class="link" href="gconf-gconf-sources.html#GConfSource">GConfSource</a>*        <a class="link" href="gconf-gconf-backend.html#gconf-backend-resolve-address">gconf_backend_resolve_address</a>       (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend,
  55                                                          const gchar *address,
  56                                                          GError **err);
  57 </pre>
  58 </div>
  59 <div class="refsect1" lang="en">
  60 <a name="id2582576"></a><h2>Description</h2>
  61 <p>
  62
  63 </p>
  64 </div>
  65 <div class="refsect1" lang="en">
  66 <a name="id2582592"></a><h2>Details</h2>
  67 <div class="refsect2" lang="en">
  68 <a name="id2582603"></a><h3>
  69 <a name="GConfBackendVTable"></a>GConfBackendVTable</h3>
  70 <a class="indexterm" name="id2621151"></a><pre class="programlisting">typedef struct {
  71   /* Set to sizeof (GConfBackendVTable) - used for future proofing */
  72   gsize                  vtable_size;
  73
  74   void                (* shutdown)        (GError** err);
  75
  76   GConfSource*        (* resolve_address) (const gchar* address,
  77                                            GError** err);
  78
  79   /* Thread locks. If the backend is thread-safe, then these
  80    * can be NULL. If per-source locks are needed, then these
  81    * calls should lock a mutex stored in the GConfSource.
  82    * If a per-backend lock is needed, then the calls can ignore
  83    * their source argument and lock the whole backend.
  84    */
  85   void                (* lock)            (GConfSource* source,
  86                                            GError** err);
  87
  88   void                (* unlock)          (GConfSource* source,
  89                                            GError** err);
  90
  91   /* Report whether a given key (and its subkeys) can be read/written.
  92    * Sources may not permit reading/writing from/to /foo but forbid
  93    * writing to /foo/bar; if a key can be read or written then its
  94    * subkeys may also be read/written.
  95    *
  96    * This field allows backends to be configured so that they only
  97    * store certain kinds of data in certain sections of the GConf
  98    * namespace.
  99    *
 100    * If these functions return an error, they MUST return FALSE as
 101    * well.
 102    */
 103
 104   gboolean           (* readable)         (GConfSource* source,
 105                                            const gchar* key,
 106                                            GError** err);
 107
 108   gboolean           (* writable)        (GConfSource* source,
 109                                            const gchar* key,
 110                                            GError** err);
 111
 112   /* schema_name filled if NULL or GCONF_VALUE_IGNORE_SUBSEQUENT returned.
 113      if schema_name is NULL, it isn't filled */
 114   GConfValue*         (* query_value)     (GConfSource* source,
 115                                            const gchar* key,
 116                                            const gchar** locales,
 117                                            gchar** schema_name,
 118                                            GError** err);
 119
 120   GConfMetaInfo*      (* query_metainfo)  (GConfSource* source,
 121                                            const gchar* key,
 122                                            GError** err);
 123
 124   void                (* set_value)       (GConfSource* source,
 125                                            const gchar* key,
 126                                            const GConfValue* value,
 127                                            GError** err);
 128
 129   /* Returns list of GConfEntry with key set to a relative
 130    * pathname. In the public client-side API the key
 131    * is always absolute though.
 132    */
 133   GSList*             (* all_entries)     (GConfSource* source,
 134                                            const gchar* dir,
 135                                            const gchar** locales,
 136                                            GError** err);
 137
 138   /* Returns list of allocated strings, relative names */
 139   GSList*             (* all_subdirs)     (GConfSource* source,
 140                                            const gchar* dir,
 141                                            GError** err);
 142
 143   void                (* unset_value)     (GConfSource* source,
 144                                            const gchar* key,
 145                                            const gchar* locale,
 146                                            GError** err);
 147
 148   gboolean            (* dir_exists)      (GConfSource* source,
 149                                            const gchar* dir,
 150                                            GError** err);
 151
 152   void                (* remove_dir)      (GConfSource* source,
 153                                            const gchar* dir,
 154                                            GError** err);
 155
 156   void                (* set_schema)      (GConfSource* source,
 157                                            const gchar* key,
 158                                            const gchar* schema_key,
 159                                            GError** err);
 160
 161   gboolean            (* sync_all)        (GConfSource* source,
 162                                            GError** err);
 163
 164   void                (* destroy_source)  (GConfSource* source);
 165
 166   /* This is basically used by the test suite */
 167   void                (* clear_cache)     (GConfSource* source);
 168
 169   /* used by gconf-sanity-check */
 170   void                (* blow_away_locks) (const char *address);
 171
 172   void                (* set_notify_func) (GConfSource           *source,
 173                                            GConfSourceNotifyFunc  notify_func,
 174                                            gpointer               user_data);
 175
 176   void                (* add_listener)    (GConfSource           *source,
 177                                            guint                  id,
 178                                            const gchar           *namespace_section);
 179
 180   void                (* remove_listener) (GConfSource           *source,
 181                                            guint                  id);
 182 } GConfBackendVTable;
 183 </pre>
 184 <p>
 185 The <a class="link" href="gconf-gconf-backend.html#GConfBackendVTable"><span class="type">GConfBackendVTable</span></a> is a table of methods that any GConf backend must
 186 implement.  The dynamically loaded library module should export a function
 187 called <code class="function">gconf_backend_get_vtable()</code> that returns a pointer to a
 188 <a class="link" href="gconf-gconf-backend.html#GConfBackendVTable"><span class="type">GConfBackendVTable</span></a>.
 189 </p>
 190 <p>
 191 Here is the specification of the vtable members:
 192
 193 </p>
 194 <div class="informaltable"><table width="100%" border="0">
 195 <colgroup>
 196 <col>
 197 <col>
 198 </colgroup>
 199 <tbody>
 200 <tr>
 201 <td><em class="parameter"><code>vtable_size</code></em></td>
 202 <td>
 203 The size of the vtable structure. This is used by the daemon to ensure that
 204 a mismatch between the version of GConf the backend was compiled against and
 205 the version the daemon was compiled against can be handled gracefully. Set
 206 this field to sizeof (GConfBackendVtable).
 207 </td>
 208 </tr>
 209 <tr>
 210 <td><em class="parameter"><code>shutdown</code></em></td>
 211 <td>Called prior to unloading the dynamic
 212 module. Should ensure that no functions or static/global variables from the
 213 module will ever be accessed again. Should free any memory that the backend
 214 no longer needs.
 215 </td>
 216 </tr>
 217 <tr>
 218 <td><em class="parameter"><code>resolve_address</code></em></td>
 219 <td>
 220 Should create a <a class="link" href="gconf-gconf-sources.html#GConfSource"><span class="type">GConfSource</span></a> for accessing the supplied address. Should set the
 221 <code class="literal">GCONF_SOURCE_ALL_READABLE</code> and <code class="literal">GCONF_SOURCE_ALL_WRITEABLE</code> flags if
 222 appropriate. If these are not set, the backend must implement the <em class="parameter"><code>writable</code></em> and
 223 <em class="parameter"><code>readable</code></em> methods. If <span class="symbol">NULL</span> is returned, then the error should
 224 be set.
 225 </td>
 226 </tr>
 227 <tr>
 228 <td><em class="parameter"><code>lock</code></em></td>
 229 <td>If the backend is thread safe (does its own locking or whatever), then
 230 <em class="parameter"><code>lock</code></em> and <em class="parameter"><code>unlock</code></em> can be <span class="symbol">NULL</span>.  If the backend requires a lock
 231 for each source, then <em class="parameter"><code>lock</code></em> and <em class="parameter"><code>unlock</code></em> should lock/unlock that lock. If the
 232 backend has a global lock for all uses of the backend, then <em class="parameter"><code>lock</code></em> and <em class="parameter"><code>unlock</code></em>
 233 should ignore their arguments and lock the entire backend.
 234 </td>
 235 </tr>
 236 <tr>
 237 <td><em class="parameter"><code>unlock</code></em></td>
 238 <td>See description of <em class="parameter"><code>lock</code></em>.</td>
 239 </tr>
 240 <tr>
 241 <td><em class="parameter"><code>readable</code></em></td>
 242 <td>
 243 If the <code class="literal">GCONF_SOURCE_ALL_READABLE</code> flag is set, this method is never called and
 244 may be <span class="symbol">NULL</span>. If <code class="literal">GCONF_SOURCE_ALL_READABLE</code> is unset, and this
 245 method is <span class="symbol">NULL</span>, then the source is write-only. If this method
 246 is implemented, it should return <span class="symbol">TRUE</span> if the given key could be
 247 read from the given source. <span class="symbol">TRUE</span> should be returned even if the
 248 key is unset; this function returns something similar to permissions, it is not
 249 asking whether the key exists. <span class="emphasis"><em>If an error is set, then
 250 <span class="symbol">FALSE</span> must be returned.</em></span>
 251 </td>
 252 </tr>
 253 <tr>
 254 <td><em class="parameter"><code>writable</code></em></td>
 255 <td>Analagous to <em class="parameter"><code>readable</code></em>, but for writing.</td>
 256 </tr>
 257 <tr>
 258 <td><em class="parameter"><code>query_value</code></em></td>
 259 <td>This method must be implemented if the source is readable. It returns the
 260 value of a key.  The "locales" argument is a <span class="symbol">NULL</span>-terminated
 261 vector of locale names, where the first locale in the vector is the preferred
 262 locale, the next is the second choice, etc. if the "schema_name" argument is
 263 non-<span class="symbol">NULL</span>, then it should be filled with an allocated string
 264 giving the name of the schema attached to the key, if and only if
 265 <span class="symbol">NULL</span> is returned. This is an optimization to avoid looking up
 266 the same key again in the database if it's unset and we need to ask for its
 267 default value from the schema. If <span class="symbol">NULL</span> is returned, indicating
 268 that the key is unset, then schema_name should not be filled in. If this method
 269 sets an error, <span class="symbol">NULL</span> must be returned. It may not set an error
 270 while also returning a value. The returned value will be destroyed by the
 271 caller, so should be a copy of the backend's internal data.
 272 </td>
 273 </tr>
 274 <tr>
 275 <td><em class="parameter"><code>query_metainfo</code></em></td>
 276 <td>This method must be implemented. If any metainfo is
 277 available about a key, it returns a <a class="link" href="gconf-gconf-value.html#GConfMetaInfo"><span class="type">GConfMetaInfo</span></a> with that metainfo set.  If
 278 none is available, <span class="symbol">NULL</span> is returned. <span class="symbol">NULL</span>
 279 should also be returned if an error is set.
 280 </td>
 281 </tr>
 282 <tr>
 283 <td><em class="parameter"><code>set_value</code></em></td>
 284 <td>This method must be implemented if the source is
 285 writable. It sets the value of a key. If the key is already set, its value
 286 should be replaced. Setting a value should update the modification time of the
 287 key.
 288 </td>
 289 </tr>
 290 <tr>
 291 <td><em class="parameter"><code>all_entries</code></em></td>
 292 <td>This method must be implemented. It returns a list of all keys in the
 293 given directory for which some information is available (metainfo or
 294 values). The returned list should contain <a class="link" href="gconf-gconf-value.html#GConfEntry"><span class="type">GConfEntry</span></a> objects. On error,
 295 <span class="symbol">NULL</span> should be returned and the error set. Subdirectories
 296 should not be included in the returned list. The list and the <a class="link" href="gconf-gconf-value.html#GConfEntry"><span class="type">GConfEntry</span></a>
 297 objects will be freed by the caller.
 298 </td>
 299 </tr>
 300 <tr>
 301 <td><em class="parameter"><code>all_subdirs</code></em></td>
 302 <td>This method must be implemented. It returns a list of all the subdirectories in a given
 303 directory.  It should return the subdirectories as relative paths, i.e. there
 304 should not be any slashes in the subdirectory name. Each subdirectory in the list
 305 should be an allocated string; the list and the strings will be freed by the caller.
 306 </td>
 307 </tr>
 308 <tr>
 309 <td><em class="parameter"><code>unset_value</code></em></td>
 310 <td>If the given key has a value, then this method should unset the value.
 311 If a value is unset, subsequent calls to <em class="parameter"><code>query_value</code></em> should return
 312 <span class="symbol">NULL</span>. If the locale string passed in to <em class="parameter"><code>unset_value</code></em> is
 313 non-<span class="symbol">NULL</span>, then only the value for that locale should be
 314 unset. If <span class="symbol">NULL</span>, the value should be globally unset for all
 315 locales.
 316 </td>
 317 </tr>
 318 <tr>
 319 <td><em class="parameter"><code>dir_exists</code></em></td>
 320 <td>
 321 Determines whether a directory exists. Should return
 322 <span class="symbol">TRUE</span> if there is a directory with the given name.
 323 </td>
 324 </tr>
 325 <tr>
 326 <td><em class="parameter"><code>remove_dir</code></em></td>
 327 <td>
 328 Should remove a directory, recursively: including all its subdirectories and
 329 all the values and keys inside the directory.
 330 </td>
 331 </tr>
 332 <tr>
 333 <td><em class="parameter"><code>set_schema</code></em></td>
 334 <td>Should associate a schema name with a key.
 335 </td>
 336 </tr>
 337 <tr>
 338 <td><em class="parameter"><code>sync_all</code></em></td>
 339 <td>
 340 Should ensure that all data is stored on permanent media, or whatever makes
 341 sense for the backend. Called periodically by the GConf daemon.
 342 </td>
 343 </tr>
 344 <tr>
 345 <td><em class="parameter"><code>destroy_source</code></em></td>
 346 <td>
 347 Should destroy a source obtained with <em class="parameter"><code>resolve_address</code></em>.
 348 </td>
 349 </tr>
 350 <tr>
 351 <td><em class="parameter"><code>clear_cache</code></em></td>
 352 <td>
 353 Discard any cached data after saving the data to permanent storage.
 354 </td>
 355 </tr>
 356 <tr>
 357 <td><em class="parameter"><code>blow_away_locks</code></em></td>
 358 <td>
 359 Unconditionally discard any locks whether they are stale or otherwise in
 360 order to force the backend to be able to obtain access to its data store.
 361 </td>
 362 </tr>
 363 <tr>
 364 <td><em class="parameter"><code>set_notify_func</code></em></td>
 365 <td>
 366 If the backend wishes to notify the daemon of changes in the value of
 367 keys it must implement this method. In order to notify the daemon
 368 of a change, the backend should invoke the supplied <em class="parameter"><code>notify_func</code></em> with
 369 <em class="parameter"><code>user_data</code></em>. Backends must not notify the daemon of changes which the
 370 daemon has not expressed interest in by adding a listener with
 371 <em class="parameter"><code>add_listener</code></em>. Also, the backend must make every effort to minimise the
 372 number of notifications it emits. For example, if the daemon has added
 373 a listener for /apps and another for /apps/foo and the value of
 374 /apps/foo/bar changes, the backend should only emit a single notification.
 375 </td>
 376 </tr>
 377 <tr>
 378 <td><em class="parameter"><code>add_listener</code></em></td>
 379 <td>
 380 If it is possible for entries to be changed concurrently by another
 381 daemon, the backend may support notifying the daemon (and any listening
 382 clients) of such changes. This function should add a listener to a
 383 section of the tree and when any of the following events occur, the
 384 backend should invoke the notify function with the key that has changed:
 385  <div class="itemizedlist"><ul type="bullet">
 386 <li style="list-style-type: disc"><p>If the entry is set or unset</p></li>
 387 <li style="list-style-type: disc"><p>If the entry's value changes</p></li>
 388 <li style="list-style-type: disc"><p>If the entry's schema name changes</p></li>
 389 <li style="list-style-type: disc"><p>
 390       If the entry is a schema and its value in <span class="emphasis"><em>any</em></span>
 391       locale changes
 392     </p></li>
 393 </ul></div>
 394 Note, the backend should <span class="emphasis"><em>not</em></span> notify the daemon of
 395 any changes that originated from the daemon itself.
 396 </td>
 397 </tr>
 398 <tr>
 399 <td><em class="parameter"><code>remove_listener</code></em></td>
 400 <td>
 401 Remove a listener added with <em class="parameter"><code>add_listener</code></em>. The listener is identified
 402 by the integer supplied.
 403 </td>
 404 </tr>
 405 </tbody>
 406 </table></div>
 407 <p>
 408 </p>
 409 </div>
 410 <hr>
 411 <div class="refsect2" lang="en">
 412 <a name="id2622707"></a><h3>
 413 <a name="GConfBackend"></a>GConfBackend</h3>
 414 <a class="indexterm" name="id2622720"></a><pre class="programlisting">typedef struct {
 415   const gchar* name;
 416   guint refcount;
 417   GConfBackendVTable vtable;
 418   GModule* module;
 419 } GConfBackend;
 420 </pre>
 421 <p>
 422
 423 </p>
 424 </div>
 425 <hr>
 426 <div class="refsect2" lang="en">
 427 <a name="id2622737"></a><h3>
 428 <a name="gconf-address-backend"></a>gconf_address_backend ()</h3>
 429 <a class="indexterm" name="id2622748"></a><pre class="programlisting">gchar*              gconf_address_backend               (const gchar *address);</pre>
 430 <p>
 431
 432 </p>
 433 <div class="variablelist"><table border="0">
 434 <col align="left" valign="top">
 435 <tbody>
 436 <tr>
 437 <td><p><span class="term"><em class="parameter"><code>address</code></em>&#160;:</span></p></td>
 438 <td>
 439 </td>
 440 </tr>
 441 <tr>
 442 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
 443 <td>
 444
 445
 446 </td>
 447 </tr>
 448 </tbody>
 449 </table></div>
 450 </div>
 451 <hr>
 452 <div class="refsect2" lang="en">
 453 <a name="id2622805"></a><h3>
 454 <a name="gconf-address-resource"></a>gconf_address_resource ()</h3>
 455 <a class="indexterm" name="id2622816"></a><pre class="programlisting">gchar*              gconf_address_resource              (const gchar *address);</pre>
 456 <p>
 457
 458 </p>
 459 <div class="variablelist"><table border="0">
 460 <col align="left" valign="top">
 461 <tbody>
 462 <tr>
 463 <td><p><span class="term"><em class="parameter"><code>address</code></em>&#160;:</span></p></td>
 464 <td>
 465 </td>
 466 </tr>
 467 <tr>
 468 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
 469 <td>
 470
 471
 472 </td>
 473 </tr>
 474 </tbody>
 475 </table></div>
 476 </div>
 477 <hr>
 478 <div class="refsect2" lang="en">
 479 <a name="id2622872"></a><h3>
 480 <a name="gconf-backend-file"></a>gconf_backend_file ()</h3>
 481 <a class="indexterm" name="id2622885"></a><pre class="programlisting">gchar*              gconf_backend_file                  (const gchar *address);</pre>
 482 <p>
 483
 484 </p>
 485 <div class="variablelist"><table border="0">
 486 <col align="left" valign="top">
 487 <tbody>
 488 <tr>
 489 <td><p><span class="term"><em class="parameter"><code>address</code></em>&#160;:</span></p></td>
 490 <td>
 491 </td>
 492 </tr>
 493 <tr>
 494 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
 495 <td>
 496
 497
 498 </td>
 499 </tr>
 500 </tbody>
 501 </table></div>
 502 </div>
 503 <hr>
 504 <div class="refsect2" lang="en">
 505 <a name="id2622941"></a><h3>
 506 <a name="gconf-get-backend"></a>gconf_get_backend ()</h3>
 507 <a class="indexterm" name="id2622954"></a><pre class="programlisting"><a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a>*       gconf_get_backend                   (const gchar *address,
 508                                                          GError **err);</pre>
 509 <p>
 510
 511 </p>
 512 <div class="variablelist"><table border="0">
 513 <col align="left" valign="top">
 514 <tbody>
 515 <tr>
 516 <td><p><span class="term"><em class="parameter"><code>address</code></em>&#160;:</span></p></td>
 517 <td>
 518 </td>
 519 </tr>
 520 <tr>
 521 <td><p><span class="term"><em class="parameter"><code>err</code></em>&#160;:</span></p></td>
 522 <td>
 523 </td>
 524 </tr>
 525 <tr>
 526 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
 527 <td>
 528
 529
 530 </td>
 531 </tr>
 532 </tbody>
 533 </table></div>
 534 </div>
 535 <hr>
 536 <div class="refsect2" lang="en">
 537 <a name="id2623032"></a><h3>
 538 <a name="gconf-backend-ref"></a>gconf_backend_ref ()</h3>
 539 <a class="indexterm" name="id2623044"></a><pre class="programlisting">void                gconf_backend_ref                   (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend);</pre>
 540 <p>
 541
 542 </p>
 543 <div class="variablelist"><table border="0">
 544 <col align="left" valign="top">
 545 <tbody><tr>
 546 <td><p><span class="term"><em class="parameter"><code>backend</code></em>&#160;:</span></p></td>
 547 <td>
 548
 549
 550 </td>
 551 </tr></tbody>
 552 </table></div>
 553 </div>
 554 <hr>
 555 <div class="refsect2" lang="en">
 556 <a name="id2623090"></a><h3>
 557 <a name="gconf-backend-unref"></a>gconf_backend_unref ()</h3>
 558 <a class="indexterm" name="id2623102"></a><pre class="programlisting">void                gconf_backend_unref                 (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend);</pre>
 559 <p>
 560
 561 </p>
 562 <div class="variablelist"><table border="0">
 563 <col align="left" valign="top">
 564 <tbody><tr>
 565 <td><p><span class="term"><em class="parameter"><code>backend</code></em>&#160;:</span></p></td>
 566 <td>
 567
 568
 569 </td>
 570 </tr></tbody>
 571 </table></div>
 572 </div>
 573 <hr>
 574 <div class="refsect2" lang="en">
 575 <a name="id2623148"></a><h3>
 576 <a name="gconf-backend-resolve-address"></a>gconf_backend_resolve_address ()</h3>
 577 <a class="indexterm" name="id2623160"></a><pre class="programlisting"><a class="link" href="gconf-gconf-sources.html#GConfSource">GConfSource</a>*        gconf_backend_resolve_address       (<a class="link" href="gconf-gconf-backend.html#GConfBackend">GConfBackend</a> *backend,
 578                                                          const gchar *address,
 579                                                          GError **err);</pre>
 580 <p>
 581
 582 </p>
 583 <div class="variablelist"><table border="0">
 584 <col align="left" valign="top">
 585 <tbody>
 586 <tr>
 587 <td><p><span class="term"><em class="parameter"><code>backend</code></em>&#160;:</span></p></td>
 588 <td>
 589 </td>
 590 </tr>
 591 <tr>
 592 <td><p><span class="term"><em class="parameter"><code>address</code></em>&#160;:</span></p></td>
 593 <td>
 594 </td>
 595 </tr>
 596 <tr>
 597 <td><p><span class="term"><em class="parameter"><code>err</code></em>&#160;:</span></p></td>
 598 <td>
 599 </td>
 600 </tr>
 601 <tr>
 602 <td><p><span class="term"><span class="emphasis"><em>Returns</em></span>&#160;:</span></p></td>
 603 <td>
 604
 605
 606 </td>
 607 </tr>
 608 </tbody>
 609 </table></div>
 610 </div>
 611 </div>
 612 <div class="refsect1" lang="en">
 613 <a name="id2623260"></a><div class="refsect2" lang="en"><a name="id2623261"></a></div>
 614 <hr>
 615 <div class="refsect2" lang="en"><a name="id2623262"></a></div>
 616 </div>
 617 </div>
 618 </body>
 619 </html>