devn00b
/
EQ2EMu


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293
							<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.6"/>
<title>Boost.Locale: Working with multiple locales</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
  $(document).ready(initResizable);
  $(window).load(resizeHeight);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 56px;">
  <td id="projectlogo"><img alt="Logo" src="boost-small.png"/></td>
  <td style="padding-left: 0.5em;">
   <div id="projectname">Boost.Locale
   </div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.6 -->
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
      <li class="current"><a href="pages.html"><span>Related&#160;Pages</span></a></li>
      <li><a href="modules.html"><span>Modules</span></a></li>
      <li><a href="namespaces.html"><span>Namespaces</span></a></li>
      <li><a href="annotated.html"><span>Classes</span></a></li>
      <li><a href="files.html"><span>Files</span></a></li>
      <li><a href="examples.html"><span>Examples</span></a></li>
    </ul>
  </div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('working_with_multiple_locales.html','');});
</script>
<div id="doc-content">
<div class="header">
  <div class="headertitle">
<div class="title">Working with multiple locales </div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><p>Boost.Locale allows you to work safely with multiple locales in the same process. As we mentioned before, the locale generation process is not a cheap one. Thus, when we work with multiple locales and need to switch between them, we recommend that you create all the locales you need when the program starts.</p>
<p>To simplify this process, the <a class="el" href="classboost_1_1locale_1_1generator.html" title="the major class used for locale generation ">boost::locale::generator</a> class has an option to cache all generated locales. With this option, when you create a locale that was previously generated, it would be fetched from the existing locale set instead. This operation is thread safe.</p>
<p>This option must be explicitly enabled by calling the <a class="el" href="classboost_1_1locale_1_1generator.html#ac2d152e2803cd96f4acc646943f2df51">locale_cache_enabled</a> member function of <a class="el" href="classboost_1_1locale_1_1generator.html" title="the major class used for locale generation ">boost::locale::generator</a> with <code>true</code> as the parameter.</p>
<p>For example:</p>
<div class="fragment"><div class="line">generator gen;</div>
<div class="line">gen.<a class="code" href="classboost_1_1locale_1_1generator.html#ac2d152e2803cd96f4acc646943f2df51">locale_cache_enabled</a>(<span class="keyword">true</span>);</div>
<div class="line">gen(<span class="stringliteral">&quot;en_US.UTF-8&quot;</span>);</div>
<div class="line">gen(<span class="stringliteral">&quot;de_DE.UTF-8&quot;</span>);</div>
<div class="line">gen(<span class="stringliteral">&quot;ja_JP.UTF-8&quot;</span>);</div>
<div class="line"><span class="comment">// Create all locales</span></div>
<div class="line"></div>
<div class="line">std::locale en=gen(<span class="stringliteral">&quot;en_US.UTF-8&quot;</span>); </div>
<div class="line"><span class="comment">// Fetch an existing locale from the cache</span></div>
<div class="line">std::locale ar=gen(<span class="stringliteral">&quot;ar_EG.UTF-8&quot;</span>);</div>
<div class="line"><span class="comment">// Because ar_EG not in the cache, a new locale is generated (and cached)</span></div>
</div><!-- fragment --><p>Then these locales can be imbued to <code>iostreams</code> or used directly as parameters to various functions. </p>
</div></div><!-- contents -->
</div><!-- doc-content -->

    <li class="footer">
&copy; Copyright 2009-2012 Artyom Beilis,  Distributed under the <a href="http://www.boost.org/LICENSE_1_0.txt">Boost Software License</a>, Version 1.0.
    </li>
   </ul>
 </div>
</body>
</html>