86 lines
4.5 KiB
HTML
86 lines
4.5 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>std::wctrans</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_string_wide_wctrans skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>wctrans</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-string.html">string</a>‎ | <a href="cpp-string-wide.html">wide</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dcl-begin">
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<tbody>
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<div>定义于头文件 <code><a href="cpp-header-cwctype.html"><cwctype></a></code></div>
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<td></td>
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<div><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">wctrans_t</span> wctrans<span class="br0">(</span> <span class="kw4">const</span> <span class="kw4">char</span><span class="sy2">*</span> str <span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>构造 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">wctrans_t</span></span></span> 类型值，描述宽字符映射的 LC_CTYPE 类别。它可以是标准映射，或如 <code>"tojhira"</code> 或 <code>"tojkata"</code> 的本地环境限定映射之一。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<td>str</td>
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<td>-</td>
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<td>保有所欲映射名的 C 字符串。
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<p>下列 <code>str</code> 的值在所有 C 本地环境中受到支持：</p>
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<table class="t-dsc-begin">
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<td><code>str</code> 的值</td>
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<td>效果</td>
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<tr class="t-dsc">
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<td><code>"toupper"</code></td>
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<td>标识 <span class="t-c"><span class="mw-geshi cpp source-cpp">towupper</span></span> 所用的映射</td>
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</tr>
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<tr class="t-dsc">
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<td><code>"tolower"</code></td>
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<td>标识 <span class="t-c"><span class="mw-geshi cpp source-cpp">towlower</span></span> 所用的映射</td>
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</tr>
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</table>
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<p><br /></p>
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</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p><span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">wctrans_t</span></span></span> 对象，适合由 <span class="t-lc"><a href="cpp-string-wide-towctrans.html">std::towctrans</a></span> 用来根据当前 C 本地环境的具名映射映射宽字符，或若 <code>str</code> 不指名当前 C 本地环境所支持的映射则为零。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div class="t-dsc-member-div">
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<div><a href="cpp-string-wide-towctrans.html"><span class="t-lines"><span>towctrans</span></span></a></div>
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</div>
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</td>
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<td>按照指定的 LC_TYPE 映射类别进行字符映射<br />
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<span class="t-mark">(函数)</span></td>
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