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| 31 | </td>
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| 32 | <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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| 33 |
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| 34 | <p>The QDataSink class is an asynchronous consumer of data.
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| 35 | <a href="#details">More...</a>
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| 36 | <p><tt>#include <<a href="qasyncio-h.html">qasyncio.h</a>></tt>
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| 37 | <p>Inherits <a href="qasyncio.html">QAsyncIO</a>.
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| 38 | <p><a href="qdatasink-members.html">List of all member functions.</a>
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| 39 | <h2>Public Members</h2>
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| 40 | <ul>
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| 41 | <li class=fn>virtual int <a href="#readyToReceive"><b>readyToReceive</b></a> () = 0</li>
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| 42 | <li class=fn>virtual void <a href="#receive"><b>receive</b></a> ( const uchar *, int count ) = 0</li>
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| 43 | <li class=fn>virtual void <a href="#eof"><b>eof</b></a> () = 0</li>
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| 44 | <li class=fn>void <a href="#maybeReady"><b>maybeReady</b></a> ()</li>
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| 45 | </ul>
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| 46 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 47 |
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| 48 |
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| 49 | <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This class is obsolete.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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| 50 | <p> The QDataSink class is an asynchronous consumer of data.
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| 51 | <p> A data sink is an object which receives data from some source in an
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| 52 | asynchronous manner. This means that at some time not determined by
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| 53 | the data sink, blocks of data are given to it from processing. The
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| 54 | data sink is able to limit the maximum size of such blocks which it
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| 55 | is currently able to process.
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| 56 | <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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| 57 |
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| 58 | <hr><h2>Member Function Documentation</h2>
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| 59 | <h3 class=fn>void <a name="eof"></a>QDataSink::eof ()<tt> [pure virtual]</tt>
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| 60 | </h3>
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| 61 |
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| 62 | <p> This function will be called when no more data is available for
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| 63 | processing.
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| 64 |
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| 65 | <h3 class=fn>void <a name="maybeReady"></a>QDataSink::maybeReady ()
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| 66 | </h3>
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| 67 | This should be called whenever <a href="#readyToReceive">readyToReceive</a>() might have become non-zero.
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| 68 | It is merely calls <a href="qasyncio.html#ready">QAsyncIO::ready</a>() if readyToReceive() is non-zero.
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| 69 |
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| 70 | <h3 class=fn>int <a name="readyToReceive"></a>QDataSink::readyToReceive ()<tt> [pure virtual]</tt>
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| 71 | </h3>
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| 72 |
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| 73 | <p> The data sink should return a value indicating how much data it is ready
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| 74 | to consume. This may be 0.
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| 75 |
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| 76 | <h3 class=fn>void <a name="receive"></a>QDataSink::receive ( const uchar *, int count )<tt> [pure virtual]</tt>
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| 77 | </h3>
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| 78 |
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| 79 | <p> This function is called to provide data for the data sink. The <em>count</em>
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| 80 | will be no more than the amount indicated by the most recent call to
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| 81 | <a href="#readyToReceive">readyToReceive</a>(). The sink must use all the provided data.
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| 82 |
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| 83 | <!-- eof -->
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| 84 | <hr><p>
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| 85 | This file is part of the <a href="index.html">Qt toolkit</a>.
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| 86 | Copyright © 1995-2007
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| 87 | <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center>
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| 89 | <td>Copyright © 2007
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| 90 | <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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| 91 | <td align=right><div align=right>Qt 3.3.8</div>
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