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<title>std::basic_spanbuf&lt;CharT,Traits&gt;::seekpos</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::basic_spanbuf&lt;CharT,Traits&gt;::</span>seekpos</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-io.html">io</a>&lrm; | <a href="cpp-io-basic_spanbuf.html">basic spanbuf</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">protected</span><span class="sy4">:</span><br /></span>
<p>pos_type seekpos<span class="br0">(</span> pos_type sp, <a href="cpp-io-ios_base-openmode.html"><span class="kw1671">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">openmode</span></span></a> which <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-io-ios_base-openmode.html"><span class="kw1674">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">in</span></span></a> <span class="sy3">|</span> <a href="cpp-io-ios_base-openmode.html"><span class="kw1675">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">out</span></span></a> <span class="br0">)</span> override<span class="sy4">;</span></div>
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<td><span class="t-mark-rev t-since-cxx23">(C++23 &#36215;)</span></td>
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<p>&#33509;&#21487;&#33021;&#65292;&#21017;&#37325;&#23547;&#20301;&#25351;&#21521;&#33719;&#21462;&#21644;/&#25110;&#25918;&#32622;&#21306;&#30340;&#25351;&#38024;&#21040; <code>sp</code> &#25152;&#25351;&#31034;&#30340;&#20301;&#32622;&#12290;</p>
<p>&#31561;&#20215;&#20110; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> seekoff<span class="br0">(</span>off_type<span class="br0">(</span>sp<span class="br0">)</span>, <a href="cpp-io-ios_base-seekdir.html"><span class="kw1703">std::<span class="me2">ios_base</span><span class="sy4">::</span><span class="me2">beg</span></span></a>, which<span class="br0">)</span><span class="sy4">;</span></span></span> &#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>sp</td>
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<td>&#27969;&#20301;&#32622;&#65292;&#20363;&#22914;&#30001; <span class="t-lc">seekoff()</span> &#25110; <code>seekpos()</code> &#33719;&#24471;&#32773;</td>
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<td>which</td>
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<td>&#23450;&#20041;&#24433;&#21709;&#30340;&#26159;&#36755;&#20837;&#24207;&#21015;&#12289;&#36755;&#20986;&#24207;&#21015;&#25110;&#20004;&#32773;&#12290;&#23427;&#33021;&#20026;&#19979;&#21015;&#24120;&#37327;&#20043;&#19968;&#25110;&#20854;&#32452;&#21512;&#65306;
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<td>&#24120;&#37327;</td>
<td>&#35299;&#37322;</td>
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<td><a href="cpp-io-ios_base-openmode.html"><tt>in</tt></a></td>
<td>&#24433;&#21709;&#36755;&#20837;&#24207;&#21015;</td>
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<td><a href="cpp-io-ios_base-openmode.html"><tt>out</tt></a></td>
<td>&#24433;&#21709;&#36755;&#20986;&#24207;&#21015;</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#25104;&#21151;&#26102;&#20026; <code>sp</code> &#65292;&#22833;&#36133;&#26102;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">pos_type<span class="br0">(</span>off_type<span class="br0">(</span><span class="sy2">-</span><span class="nu0">1</span><span class="br0">)</span><span class="br0">)</span></span></span> &#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p><code>seekpos()</code> &#20026; <span class="t-lc"><a href="cpp-io-basic_streambuf-pubseekpos.html">std::basic_streambuf::pubseekpos()</a></span> &#25152;&#35843;&#29992;&#65292;&#23427;&#21448;&#20026; <span class="t-lc"><a href="cpp-io-basic_istream-seekg.html">std::basic_istream::seekg()</a></span> &#21644; <span class="t-lc"><a href="cpp-io-basic_ostream-seekp.html">std::basic_ostream::seekp()</a></span> &#30340;&#21333;&#21442;&#25968;&#29256;&#26412;&#25152;&#35843;&#29992;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<td class="mbox-text" style="">&#26412;&#33410;&#26410;&#23436;&#25104;<br />
&#21407;&#22240;&#65306;&#26242;&#26080;&#31034;&#20363;</td>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-io-basic_streambuf-pubseekpos.html"><span class="t-lines"><span>pubseekpos</span></span></a></div>
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<td>&#35843;&#29992; <span class="t-c"><span class="mw-geshi cpp source-cpp">seekpos<span class="br0">(</span><span class="br0">)</span></span></span><br />
<span class="t-mark">(<code>std::basic_streambuf&lt;CharT,Traits&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-io-basic_stringbuf-seekpos.html"><span class="t-lines"><span>seekpos</span></span></a></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#34394;]</span></span></span></div>
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<td>&#29992;&#32477;&#23545;&#23547;&#22336;&#65292;&#37325;&#23450;&#20301;&#36755;&#20837;&#24207;&#21015;&#12289;&#36755;&#20986;&#24207;&#21015;&#25110;&#20004;&#32773;&#20013;&#30340;&#19979;&#19968;&#20301;&#32622;&#25351;&#38024;<br />
<span class="t-mark">(<code>std::basic_stringbuf&lt;CharT,Traits,Allocator&gt;</code> &#30340;&#34394;&#21463;&#20445;&#25252;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-io-strstreambuf-seekpos.html"><span class="t-lines"><span>seekpos</span></span></a></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#34394;]</span></span></span></div>
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<td>&#29992;&#32477;&#23545;&#23547;&#22336;&#37325;&#23547;&#20301;&#36755;&#20837;&#24207;&#21015;&#12289;&#36755;&#20986;&#24207;&#21015;&#25110;&#20004;&#32773;&#20013;&#30340;&#19979;&#19968;&#20301;&#32622;&#25351;&#38024;<br />
<span class="t-mark">(<code>std::strstreambuf</code> &#30340;&#34394;&#21463;&#20445;&#25252;&#25104;&#21592;&#20989;&#25968;)</span></td>
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