<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/kernel/qasyncio.cpp:296 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>TQDataPump Class</title> <style type="text/css"><!-- fn { margin-left: 1cm; text-indent: -1cm; } a:link { color: #004faf; text-decoration: none } a:visited { color: #672967; text-decoration: none } body { background: #ffffff; color: black; } --></style> </head> <body> <table border="0" cellpadding="0" cellspacing="0" width="100%"> <tr bgcolor="#E5E5E5"> <td valign=center> <a href="index.html"> <font color="#004faf">Home</font></a> | <a href="classes.html"> <font color="#004faf">All Classes</font></a> | <a href="mainclasses.html"> <font color="#004faf">Main Classes</font></a> | <a href="annotated.html"> <font color="#004faf">Annotated</font></a> | <a href="groups.html"> <font color="#004faf">Grouped Classes</font></a> | <a href="functions.html"> <font color="#004faf">Functions</font></a> </td> <td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQDataPump Class Reference<br><small>[obsolete]</small></h1> <p>The TQDataPump class moves data from a TQDataSource to a TQDataSink during event processing. <a href="#details">More...</a> <p><tt>#include <<a href="qasyncio-h.html">ntqasyncio.h</a>></tt> <p>Inherits <a href="ntqobject.html">TQObject</a>. <p><a href="qdatapump-members.html">List of all member functions.</a> <h2>Public Members</h2> <ul> <li class=fn><a href="#TQDataPump"><b>TQDataPump</b></a> ( TQDataSource * data_source, TQDataSink * data_sink )</li> </ul> <hr><a name="details"></a><h2>Detailed Description</h2> <b>This class is obsolete.</b> It is provided to keep old source working. We strongly advise against using it in new code. <p> The TQDataPump class moves data from a TQDataSource to a TQDataSink during event processing. <p> For a TQDataSource to provide data to a TQDataSink, a controller must exist to examine the <a href="qdatasource.html#readyToSend">TQDataSource::readyToSend</a>() and <a href="qdatasink.html#readyToReceive">TQDataSink::readyToReceive</a>() methods and respond to the TQASyncIO::activate() signal of the source and sink. One very useful way to do this is interleaved with other event processing. TQDataPump provides this - create a pipe between a source and a sink, and data will be moved during subsequent event processing. <p> Note that each source can only provide data to one sink and each sink can only receive data from one source (although it is quite possible to write a multiplexing sink that is multiple sources). <hr><h2>Member Function Documentation</h2> <h3 class=fn><a name="TQDataPump"></a>TQDataPump::TQDataPump ( <a href="qdatasource.html">TQDataSource</a> * data_source, <a href="qdatasink.html">TQDataSink</a> * data_sink ) </h3> Constructs a TQDataPump to move data from a given <em>data_source</em> to a given <em>data_sink</em>. <!-- eof --> <hr><p> This file is part of the <a href="index.html">TQt toolkit</a>. Copyright © 1995-2007 <a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> <table width=100% cellspacing=0 border=0><tr> <td>Copyright © 2007 <a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> <td align=right><div align=right>TQt 3.3.8</div> </table></div></address></body> </html>