You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
qt3/doc/html/qnetworkoperation.html

170 lines
9.7 KiB

<!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/qnetworkprotocol.cpp:974 -->
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>QNetworkOperation 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>QNetworkOperation Class Reference<br><small>[<a href="network.html">network module</a>]</small></h1>
<p>The QNetworkOperation class provides common operations for network protocols.
<a href="#details">More...</a>
<p><tt>#include &lt;<a href="qnetworkprotocol-h.html">qnetworkprotocol.h</a>&gt;</tt>
<p>Inherits <a href="qobject.html">QObject</a>.
<p><a href="qnetworkoperation-members.html">List of all member functions.</a>
<h2>Public Members</h2>
<ul>
<li class=fn><a href="#QNetworkOperation"><b>QNetworkOperation</b></a> ( QNetworkProtocol::Operation&nbsp;operation, const&nbsp;QString&nbsp;&amp;&nbsp;arg0, const&nbsp;QString&nbsp;&amp;&nbsp;arg1, const&nbsp;QString&nbsp;&amp;&nbsp;arg2 )</li>
<li class=fn><a href="#QNetworkOperation-2"><b>QNetworkOperation</b></a> ( QNetworkProtocol::Operation&nbsp;operation, const&nbsp;QByteArray&nbsp;&amp;&nbsp;arg0, const&nbsp;QByteArray&nbsp;&amp;&nbsp;arg1, const&nbsp;QByteArray&nbsp;&amp;&nbsp;arg2 )</li>
<li class=fn><a href="#~QNetworkOperation"><b>~QNetworkOperation</b></a> ()</li>
<li class=fn>void <a href="#setState"><b>setState</b></a> ( QNetworkProtocol::State&nbsp;state )</li>
<li class=fn>void <a href="#setProtocolDetail"><b>setProtocolDetail</b></a> ( const&nbsp;QString&nbsp;&amp;&nbsp;detail )</li>
<li class=fn>void <a href="#setErrorCode"><b>setErrorCode</b></a> ( int&nbsp;ec )</li>
<li class=fn>void <a href="#setArg"><b>setArg</b></a> ( int&nbsp;num, const&nbsp;QString&nbsp;&amp;&nbsp;arg )</li>
<li class=fn>void <a href="#setRawArg"><b>setRawArg</b></a> ( int&nbsp;num, const&nbsp;QByteArray&nbsp;&amp;&nbsp;arg )</li>
<li class=fn>QNetworkProtocol::Operation <a href="#operation"><b>operation</b></a> () const</li>
<li class=fn>QNetworkProtocol::State <a href="#state"><b>state</b></a> () const</li>
<li class=fn>QString <a href="#arg"><b>arg</b></a> ( int&nbsp;num ) const</li>
<li class=fn>QByteArray <a href="#rawArg"><b>rawArg</b></a> ( int&nbsp;num ) const</li>
<li class=fn>QString <a href="#protocolDetail"><b>protocolDetail</b></a> () const</li>
<li class=fn>int <a href="#errorCode"><b>errorCode</b></a> () const</li>
<li class=fn>void <a href="#free"><b>free</b></a> ()</li>
</ul>
<hr><a name="details"></a><h2>Detailed Description</h2>
<p> The QNetworkOperation class provides common operations for network protocols.
<p>
<p> An object is created to describe the operation and the current
state for each operation that a network protocol should process.
<p> For a detailed description of the Qt Network Architecture and how
to implement and use network protocols in Qt, see the <a href="network.html">Qt Network Documentation</a>.
<p> <p>See also <a href="qnetworkprotocol.html">QNetworkProtocol</a> and <a href="io.html">Input/Output and Networking</a>.
<hr><h2>Member Function Documentation</h2>
<h3 class=fn><a name="QNetworkOperation"></a>QNetworkOperation::QNetworkOperation ( <a href="qnetworkprotocol.html#Operation-enum">QNetworkProtocol::Operation</a>&nbsp;operation, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;arg0, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;arg1, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;arg2 )
</h3>
Constructs a network operation object. <em>operation</em> is the type of
the operation, and <em>arg0</em>, <em>arg1</em> and <em>arg2</em> are the first
three arguments of the operation. The state is initialized to
QNetworkProtocol::StWaiting.
<p> <p>See also <a href="qnetworkprotocol.html#Operation-enum">QNetworkProtocol::Operation</a> and <a href="qnetworkprotocol.html#State-enum">QNetworkProtocol::State</a>.
<h3 class=fn><a name="QNetworkOperation-2"></a>QNetworkOperation::QNetworkOperation ( <a href="qnetworkprotocol.html#Operation-enum">QNetworkProtocol::Operation</a>&nbsp;operation, const&nbsp;<a href="qbytearray.html">QByteArray</a>&nbsp;&amp;&nbsp;arg0, const&nbsp;<a href="qbytearray.html">QByteArray</a>&nbsp;&amp;&nbsp;arg1, const&nbsp;<a href="qbytearray.html">QByteArray</a>&nbsp;&amp;&nbsp;arg2 )
</h3>
Constructs a network operation object. <em>operation</em> is the type of
the operation, and <em>arg0</em>, <em>arg1</em> and <em>arg2</em> are the first
three raw data arguments of the operation. The state is
initialized to QNetworkProtocol::StWaiting.
<p> <p>See also <a href="qnetworkprotocol.html#Operation-enum">QNetworkProtocol::Operation</a> and <a href="qnetworkprotocol.html#State-enum">QNetworkProtocol::State</a>.
<h3 class=fn><a name="~QNetworkOperation"></a>QNetworkOperation::~QNetworkOperation ()
</h3>
Destructor.
<h3 class=fn><a href="qstring.html">QString</a> <a name="arg"></a>QNetworkOperation::arg ( int&nbsp;num ) const
</h3>
Returns the operation's <em>num</em>-th argument. If this argument was
not already set, an empty string is returned.
<p>Example: <a href="networkprotocol-example.html#x672">network/networkprotocol/nntp.cpp</a>.
<h3 class=fn>int <a name="errorCode"></a>QNetworkOperation::errorCode () const
</h3>
Returns the error code for the last error that occurred.
<h3 class=fn>void <a name="free"></a>QNetworkOperation::free ()
</h3>
Sets this object to delete itself when it hasn't been used for one
second.
<p> Because QNetworkOperation pointers are passed around a lot the
<a href="qnetworkprotocol.html">QNetworkProtocol</a> generally does not have enough knowledge to
delete these at the correct time. If a QNetworkProtocol doesn't
need an operation any more it will call this function instead.
<p> Note: you should never need to call the method yourself.
<h3 class=fn><a href="qnetworkprotocol.html#Operation-enum">QNetworkProtocol::Operation</a> <a name="operation"></a>QNetworkOperation::operation () const
</h3>
Returns the type of the operation.
<h3 class=fn><a href="qstring.html">QString</a> <a name="protocolDetail"></a>QNetworkOperation::protocolDetail () const
</h3>
Returns a detailed error message for the last error. This must
have been set using <a href="#setProtocolDetail">setProtocolDetail</a>().
<h3 class=fn><a href="qbytearray.html">QByteArray</a> <a name="rawArg"></a>QNetworkOperation::rawArg ( int&nbsp;num ) const
</h3>
Returns the operation's <em>num</em>-th raw data argument. If this
argument was not already set, an empty bytearray is returned.
<h3 class=fn>void <a name="setArg"></a>QNetworkOperation::setArg ( int&nbsp;num, const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;arg )
</h3>
Sets the network operation's <em>num</em>-th argument to <em>arg</em>.
<h3 class=fn>void <a name="setErrorCode"></a>QNetworkOperation::setErrorCode ( int&nbsp;ec )
</h3>
Sets the error code to <em>ec</em>.
<p> If the operation failed, the protocol should set an error code to
describe the error in more detail. If possible, one of the error
codes defined in <a href="qnetworkprotocol.html">QNetworkProtocol</a> should be used.
<p> <p>See also <a href="#setProtocolDetail">setProtocolDetail</a>() and <a href="qnetworkprotocol.html#Error-enum">QNetworkProtocol::Error</a>.
<h3 class=fn>void <a name="setProtocolDetail"></a>QNetworkOperation::setProtocolDetail ( const&nbsp;<a href="qstring.html">QString</a>&nbsp;&amp;&nbsp;detail )
</h3>
If the operation failed, the error message can be specified as <em>detail</em>.
<h3 class=fn>void <a name="setRawArg"></a>QNetworkOperation::setRawArg ( int&nbsp;num, const&nbsp;<a href="qbytearray.html">QByteArray</a>&nbsp;&amp;&nbsp;arg )
</h3>
Sets the network operation's <em>num</em>-th raw data argument to <em>arg</em>.
<h3 class=fn>void <a name="setState"></a>QNetworkOperation::setState ( <a href="qnetworkprotocol.html#State-enum">QNetworkProtocol::State</a>&nbsp;state )
</h3>
Sets the <em>state</em> of the operation object. This should be done by
the network protocol during processing; at the end it should be
set to QNetworkProtocol::StDone or QNetworkProtocol::StFailed,
depending on success or failure.
<p> <p>See also <a href="qnetworkprotocol.html#State-enum">QNetworkProtocol::State</a>.
<h3 class=fn><a href="qnetworkprotocol.html#State-enum">QNetworkProtocol::State</a> <a name="state"></a>QNetworkOperation::state () const
</h3>
Returns the state of the operation. You can determine whether an
operation is still waiting to be processed, is being processed,
has been processed successfully, or failed.
<!-- eof -->
<hr><p>
This file is part of the <a href="index.html">Qt 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>Qt 3.3.8</div>
</table></div></address></body>
</html>