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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>QDataPump Class Reference<br><small>[obsolete]</small></h1>
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| 33 |
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| 34 | <p>The QDataPump class moves data from a QDataSource to a QDataSink during event processing.
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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="qobject.html">QObject</a>.
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| 38 | <p><a href="qdatapump-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><a href="#QDataPump"><b>QDataPump</b></a> ( QDataSource * data_source, QDataSink * data_sink )</li>
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| 42 | </ul>
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| 43 | <hr><a name="details"></a><h2>Detailed Description</h2>
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| 44 |
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| 45 |
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| 46 | <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This class is obsolete.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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| 47 | <p> The QDataPump class moves data from a QDataSource to a QDataSink during event processing.
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| 48 | <p> For a QDataSource to provide data to a QDataSink, a controller must exist
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| 49 | to examine the <a href="qdatasource.html#readyToSend">QDataSource::readyToSend</a>() and <a href="qdatasink.html#readyToReceive">QDataSink::readyToReceive</a>()
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| 50 | methods and respond to the QASyncIO::activate() signal of the source and
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| 51 | sink. One very useful way to do this is interleaved with other event
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| 52 | processing. QDataPump provides this - create a pipe between a source
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| 53 | and a sink, and data will be moved during subsequent event processing.
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| 54 | <p> Note that each source can only provide data to one sink and each sink
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| 55 | can only receive data from one source (although it is quite possible
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| 56 | to write a multiplexing sink that is multiple sources).
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| 57 |
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| 58 | <hr><h2>Member Function Documentation</h2>
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| 59 | <h3 class=fn><a name="QDataPump"></a>QDataPump::QDataPump ( <a href="qdatasource.html">QDataSource</a> * data_source, <a href="qdatasink.html">QDataSink</a> * data_sink )
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| 60 | </h3>
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| 61 | Constructs a QDataPump to move data from a given <em>data_source</em>
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| 62 | to a given <em>data_sink</em>.
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| 63 |
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| 64 | <!-- eof -->
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| 67 | Copyright © 1995-2007
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