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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::strstreambuf::</span>freeze</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-strstreambuf.html">strstreambuf</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> freeze<span class="br0">(</span> <span class="kw4">bool</span> freezefl <span class="sy1">=</span> <span class="kw2">true</span> <span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>&#33509;&#32531;&#20914;&#21306;&#20351;&#29992;&#21160;&#24577;&#20998;&#37197;&#65292;&#21017;&#35774;&#32622;&#27969;&#30340;&#20923;&#32467;&#29366;&#24577;&#20026; <code>freezefl</code> &#12290;</p>
<p>&#27969;&#20923;&#32467;&#26102;&#65292; <span class="t-lc"><a href="cpp-io-strstreambuf-overflow.html">overflow()</a></span> &#19981;&#20250;&#37325;&#20998;&#37197;&#32531;&#20914;&#21306;&#65292;&#32780;<a href="cpp-io-strstreambuf-~strstreambuf.html">&#26512;&#26500;&#20989;&#25968;</a>&#19981;&#20250;&#35299;&#20998;&#37197;&#32531;&#20914;&#21306;&#65288;&#22240;&#32780;&#23548;&#33268;&#20869;&#23384;&#27844;&#28431;&#65289;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>freezefl</td>
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<td>&#35774;&#32622;&#20923;&#32467;&#29366;&#24577;&#21040;&#30340;&#26032;&#20540;</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>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">&#27880;&#24847;</span></h3>
<p>&#27599;&#27425;&#23545; <span class="t-lc"><a href="cpp-io-strstreambuf-str.html">str()</a></span> &#30340;&#35843;&#29992;&#37117;&#20923;&#32467;&#27969;&#65292;&#20197;&#20445;&#25345;&#20854;&#25152;&#36820;&#22238;&#30340;&#25351;&#38024;&#30340;&#21512;&#27861;&#24615;&#12290;&#20026;&#20801;&#35768;&#26512;&#26500;&#20989;&#25968;&#35299;&#20998;&#37197;&#32531;&#20914;&#21306;&#65292;&#38656;&#35201;&#26174;&#24335;&#35843;&#29992; <span class="t-lc"><strong class="selflink">freeze(false)</strong></span> &#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<p>&#27492;&#31034;&#20363;&#20013;&#65292;&#24213;&#23618;&#25968;&#32452;&#30340;&#21021;&#22987;&#20998;&#37197;&#20026; 16 &#23383;&#33410;</p>
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<pre class="de1"><span class="co2">#include &lt;strstream&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="br0">{</span>
<a href="cpp-io-strstream.html"><span class="kw1755">std::<span class="me2">strstream</span></span></a> dyn<span class="sy4">;</span> <span class="co1">// &#21160;&#24577;&#20998;&#37197;&#30340;&#35835;/&#20889;&#32531;&#20914;&#21306;</span>
dyn <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;Test: &quot;</span> <span class="sy1">&lt;&lt;</span> <span class="nu16">1.23</span><span class="sy4">;</span> <span class="co1">// &#27880;&#24847;&#65306;&#26080; std::ends &#65292;&#20197;&#28436;&#31034;&#21518;&#38468;&#34892;&#20026;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;dynamic buffer holds &quot;</span> <span class="sy1">&lt;&lt;</span> dyn.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; characters: &#39;&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a>.<span class="me1">write</span><span class="br0">(</span>dyn.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span>, dyn.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="co1">// &#32531;&#20914;&#21306;&#29616;&#22312;&#20923;&#32467;&#65292;&#36827;&#19968;&#27493;&#36755;&#20986;&#23558;&#19981;&#20351;&#32531;&#20914;&#21306;&#22686;&#38271;</span>
dyn <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;more output, hopefully enough to run out of the allocated space&quot;</span> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-ends.html"><span class="kw1789">std::<span class="me2">ends</span></span></a><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;After more output, it holds &quot;</span>
<span class="sy1">&lt;&lt;</span> dyn.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; characters: &#39;&quot;</span> <span class="sy1">&lt;&lt;</span> dyn.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
dyn.<span class="me1">freeze</span><span class="br0">(</span><span class="kw2">false</span><span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#22312;&#26512;&#26500;&#20989;&#25968;&#21069;&#35299;&#20923;</span>
<span class="br0">}</span> <span class="co1">// &#26512;&#26500;&#20989;&#25968;&#37322;&#25918;&#20869;&#23384;</span>
<span class="br0">{</span>
<span class="kw4">char</span> arr<span class="br0">[</span><span class="nu0">20</span><span class="br0">]</span><span class="sy4">;</span>
<a href="cpp-io-ostrstream.html"><span class="kw1754">std::<span class="me2">ostrstream</span></span></a> st<span class="br0">(</span>arr, sizeof arr<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#22266;&#23450;&#22823;&#23567;&#32531;&#20914;&#21306;</span>
st <span class="sy1">&lt;&lt;</span> <span class="nu16">1.23</span><span class="sy4">;</span> <span class="co1">// &#27880;&#24847;&#65306;&#26080; std::ends &#65292;&#20197;&#28436;&#31034;&#21518;&#38468;&#34892;&#20026;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;static buffer holds &quot;</span>
<span class="sy1">&lt;&lt;</span> st.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; characters: &#39;&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a>.<span class="me1">write</span><span class="br0">(</span>st.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span>, st.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
st <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;more output, hopefully enough to run out of the allocated space&quot;</span> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-ends.html"><span class="kw1789">std::<span class="me2">ends</span></span></a><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;static buffer holds &quot;</span>
<span class="sy1">&lt;&lt;</span> st.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; characters: &#39;&quot;</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a>.<span class="me1">write</span><span class="br0">(</span>st.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span>, st.<span class="me1">pcount</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="co1">// &#26080;&#24453;&#35299;&#20998;&#37197;&#32773;&#65292;&#26080;&#38656;&#35299;&#20923;</span>
<span class="br0">}</span></pre></div>
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<p>&#36755;&#20986;&#65306;</p>
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<div class="text source-text">
<pre class="de1">dynamic buffer holds 10 characters: &#39;Test: 1.23&#39;
After more output, it holds 16 characters: &#39;Test: 1.23more o&#39;
static buffer holds 4 characters: &#39;1.23&#39;
static buffer holds 20 characters: &#39;1.23more output, hop&#39;</pre></div>
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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-strstream-freeze.html"><span class="t-lines"><span>freeze</span></span></a></div>
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<td>&#31105;&#29992;/&#21551;&#29992;&#33258;&#21160;&#35299;&#20998;&#37197;<br />
<span class="t-mark">(<code>std::strstream</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-io-ostrstream-freeze.html"><span class="t-lines"><span>freeze</span></span></a></div>
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<td>&#31105;&#29992;/&#21551;&#29992;&#33258;&#21160;&#35299;&#20998;&#37197;<br />
<span class="t-mark">(<code>std::ostrstream</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div class="t-dsc-member-div t-dsc-member-nobold-div">
<div><a href="cpp-io-strstreambuf-~strstreambuf.html"><span class="t-lines"><span>(&#26512;&#26500;&#20989;&#25968;)</span></span></a></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#34394;]</span></span></span></div>
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<td>&#38144;&#27585; strstreambuf &#23545;&#35937;&#65292;&#21487;&#36873;&#22320;&#35299;&#20998;&#37197;&#23383;&#31526;&#25968;&#32452;<br />
<span class="t-mark">(&#34394;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-io-strstreambuf-overflow.html"><span class="t-lines"><span>overflow</span></span></a></div>
<div><span class="t-lines"><span><span class="t-cmark">[&#34394;]</span></span></span></div>
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<td>&#21518;&#38468;&#23383;&#31526;&#21040;&#36755;&#20986;&#24207;&#21015;&#65292;&#21487;&#33021;&#37325;&#20998;&#37197;&#25110;&#21021;&#22987;&#22320;&#20998;&#37197;&#32531;&#20914;&#21306;&#65292;&#33509;&#23427;&#20026;&#21160;&#24577;&#19988;&#26410;&#34987;&#20923;&#32467;<br />
<span class="t-mark">(&#34394;&#21463;&#20445;&#25252;&#25104;&#21592;&#20989;&#25968;)</span></td>
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