doc/html/qdatapump.html


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74

<!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&nbsp;Classes</font></a>
 | <a href="mainclasses.html">
<font color="#004faf">Main&nbsp;Classes</font></a>
 | <a href="annotated.html">
<font color="#004faf">Annotated</font></a>
 | <a href="groups.html">
<font color="#004faf">Grouped&nbsp;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 &lt;<a href="qasyncio-h.html">ntqasyncio.h</a>&gt;</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&nbsp;*&nbsp;data_source, TQDataSink&nbsp;*&nbsp;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This class is obsolete.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>&nbsp;*&nbsp;data_source, <a href="qdatasink.html">TQDataSink</a>&nbsp;*&nbsp;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 &copy; 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 &copy; 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>