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94 lines
4.1 KiB
94 lines
4.1 KiB
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<title>QDataSink Class</title>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>QDataSink Class Reference<br><small>[obsolete]</small></h1>
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<p>The QDataSink class is an asynchronous consumer of data.
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<a href="#details">More...</a>
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<p><tt>#include <<a href="qasyncio-h.html">qasyncio.h</a>></tt>
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<p>Inherits <a href="qasyncio.html">QAsyncIO</a>.
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<p><a href="qdatasink-members.html">List of all member functions.</a>
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<h2>Public Members</h2>
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<ul>
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<li class=fn>virtual int <a href="#readyToReceive"><b>readyToReceive</b></a> () = 0</li>
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<li class=fn>virtual void <a href="#receive"><b>receive</b></a> ( const uchar *, int count ) = 0</li>
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<li class=fn>virtual void <a href="#eof"><b>eof</b></a> () = 0</li>
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<li class=fn>void <a href="#maybeReady"><b>maybeReady</b></a> ()</li>
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</ul>
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<hr><a name="details"></a><h2>Detailed Description</h2>
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<b>This class is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code.
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<p> The QDataSink class is an asynchronous consumer of data.
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<p> A data sink is an object which receives data from some source in an
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asynchronous manner. This means that at some time not determined by
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the data sink, blocks of data are given to it from processing. The
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data sink is able to limit the maximum size of such blocks which it
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is currently able to process.
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<p> <p>See also <a href="qasyncio.html">QAsyncIO</a>, <a href="qdatasource.html">QDataSource</a>, and <a href="qdatapump.html">QDataPump</a>.
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<hr><h2>Member Function Documentation</h2>
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<h3 class=fn>void <a name="eof"></a>QDataSink::eof ()<tt> [pure virtual]</tt>
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</h3>
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<p> This function will be called when no more data is available for
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processing.
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<h3 class=fn>void <a name="maybeReady"></a>QDataSink::maybeReady ()
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</h3>
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This should be called whenever <a href="#readyToReceive">readyToReceive</a>() might have become non-zero.
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It is merely calls <a href="qasyncio.html#ready">QAsyncIO::ready</a>() if readyToReceive() is non-zero.
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<h3 class=fn>int <a name="readyToReceive"></a>QDataSink::readyToReceive ()<tt> [pure virtual]</tt>
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</h3>
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<p> The data sink should return a value indicating how much data it is ready
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to consume. This may be 0.
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<h3 class=fn>void <a name="receive"></a>QDataSink::receive ( const uchar *, int count )<tt> [pure virtual]</tt>
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</h3>
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<p> This function is called to provide data for the data sink. The <em>count</em>
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will be no more than the amount indicated by the most recent call to
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<a href="#readyToReceive">readyToReceive</a>(). The sink must use all the provided data.
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Copyright © 1995-2007
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<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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<td align=right><div align=right>Qt 3.3.8</div>
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