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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><!-- /home/reggie/tmp/qt-3.0-reggie-5401/qt-x11-commercial-3.0.5/src/sql/qsqlrecord.cpp:631 --><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>QSqlRecordInfo Class</title><style type="text/css"><!--h3.fn,span.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>QSqlRecordInfo Class Reference<br><small>[<a href="sql.html">sql module</a>]</small></h1><p>The QSqlRecordInfo class encapsulates a set of database field meta data.<a href="#details">More...</a><p><tt>#include <<a href="qsqlrecord-h.html">qsqlrecord.h</a>></tt><p><a href="qsqlrecordinfo-members.html">List of all member functions.</a><h2>Public Members</h2><ul><li><div class=fn><a href="#QSqlRecordInfo"><b>QSqlRecordInfo</b></a> ()</div></li><li><div class=fn><a href="#QSqlRecordInfo-2"><b>QSqlRecordInfo</b></a> ( const QSqlFieldInfoList & other )</div></li><li><div class=fn><a href="#QSqlRecordInfo-3"><b>QSqlRecordInfo</b></a> ( const QSqlRecord & other )</div></li><li><div class=fn>size_type <a href="#contains"><b>contains</b></a> ( const QString & fieldName ) const</div></li><li><div class=fn>QSqlFieldInfo <a href="#find"><b>find</b></a> ( const QString & fieldName ) const</div></li><li><div class=fn>QSqlRecord <a href="#toRecord"><b>toRecord</b></a> () const</div></li></ul><hr><a name="details"></a><h2>Detailed Description</h2>The QSqlRecordInfo class encapsulates a set of database field meta data.<p> This class is a <a href="qvaluelist.html">QValueList</a> that holds a set of database field metadata. Use <a href="#contains">contains</a>() to see if a given field name exists in therecord, and use <a href="#find">find</a>() to get a <a href="qsqlfieldinfo.html">QSqlFieldInfo</a> record for a namedfield.<p> <p>See also <a href="qvaluelist.html">QValueList</a>, <a href="qsqlfieldinfo.html">QSqlFieldInfo</a> and <a href="database.html">Database Classes</a>.<hr><h2>Member Function Documentation</h2><h3 class=fn><a name="QSqlRecordInfo"></a>QSqlRecordInfo::QSqlRecordInfo ()</h3> <p> Constructs an empty recordinfo object<h3 class=fn><a name="QSqlRecordInfo-2"></a>QSqlRecordInfo::QSqlRecordInfo ( const QSqlFieldInfoList & other )</h3> <p> Constructs a copy of <em>other</em>.<h3 class=fn><a name="QSqlRecordInfo-3"></a>QSqlRecordInfo::QSqlRecordInfo ( const <a href="qsqlrecord.html">QSqlRecord</a> & other )</h3> Constructs a QSqlRecordInfo object based on the fields in the<a href="qsqlrecord.html">QSqlRecord</a> <em>other</em>.<h3 class=fn>size_type <a name="contains"></a>QSqlRecordInfo::contains ( const <a href="qstring.html">QString</a> & fieldName ) const</h3> Returns the number of times a field named <em>fieldName</em> occurs in the record.Returns 0 if no field by that name could be found.<h3 class=fn><a href="qsqlfieldinfo.html">QSqlFieldInfo</a> <a name="find"></a>QSqlRecordInfo::find ( const <a href="qstring.html">QString</a> & fieldName ) const</h3>Returns a <a href="qsqlfieldinfo.html">QSqlFieldInfo</a> object for the first field in the recordwhich has the field name <em>fieldName</em>. If no matching field isfound then an empty QSqlFieldInfo object is returned.<h3 class=fn><a href="qsqlrecord.html">QSqlRecord</a> <a name="toRecord"></a>QSqlRecordInfo::toRecord () const</h3>Returns an empty <a href="qsqlrecord.html">QSqlRecord</a> based on the field informationin this QSqlRecordInfo.<!-- eof --><hr><p>This file is part of the <a href="index.html">Qt toolkit</a>.Copyright © 1995-2002<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 © 2002 <a href="http://www.trolltech.com">Trolltech</a><td><a href="http://www.trolltech.com/trademarks.html">Trademarks</a><td align=right><div align=right>Qt version 3.0.5</div></table></div></address></body></html>⌨️ 快捷键说明
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