85 lines
4.6 KiB
HTML
85 lines
4.6 KiB
HTML
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<title>std::basic_streambuf<CharT,Traits>::eback, gptr, egptr</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_io_basic_streambuf_gptr skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::basic_streambuf<CharT,Traits>::</span>eback, gptr, egptr</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-io.html">io</a>‎ | <a href="cpp-io-basic_streambuf.html">basic streambuf</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">char_type<span class="sy2">*</span> eback<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<div><span class="mw-geshi cpp source-cpp">char_type<span class="sy2">*</span> gptr<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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<div><span class="mw-geshi cpp source-cpp">char_type<span class="sy2">*</span> egptr<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
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<p>返回定义获取区的指针。</p>
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<p>1) 返回指向获取区起始的指针。</p>
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<p>2) 返回指向获取区中当前字符的指针（<i>获取指针</i>）。</p>
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<p>3) 返回获取区结尾后一位置的指针。</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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<p>（无）</p>
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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>1) 指向获取区起始的指针。</p>
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<p>2) 指向获取区中当前字符的指针（<i>获取指针</i>）。</p>
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<p>3) 获取区结尾后一位置的指针。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">注意</span></h3>
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<p>名称 "gptr" 和 "egptr" 指代获取区，而名称 "eback" 指代回放区的结尾：从 gptr 往回步进，能放回字符到 eback 为止。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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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><a href="cpp-io-basic_streambuf-pptr.html"><span class="t-lines"><span>pbase</span><span>pptr</span><span>epptr</span></span></a></div>
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</td>
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<td>返回指向放置区的起始、当前字符和末尾的指针<br />
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<span class="t-mark">(受保护成员函数)</span></td>
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