doc/html/sql-overview-update-main-cpp.html


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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>sql/overview/update/main.cpp Example File</h1>

 
<pre>/****************************************************************************
** $Id: qt/main.cpp   3.3.8   edited Jan 11 14:37 $
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of an example program for Qt.  This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/

#include &lt;<a href="qapplication-h.html">qapplication.h</a>&gt;
#include &lt;<a href="qsqldatabase-h.html">qsqldatabase.h</a>&gt;
#include &lt;<a href="qsqlcursor-h.html">qsqlcursor.h</a>&gt;
#include "../connection.h"

int main( int argc, char *argv[] )
{
    <a href="qapplication.html">QApplication</a> app( argc, argv, FALSE );

    if ( createConnections() ) {
        <a href="qsqlcursor.html">QSqlCursor</a> cur( "prices" );
        cur.<a href="qsqlcursor.html#select">select</a>( "id=202" );
        if ( cur.<a href="qsqlquery.html#next">next</a>() ) {
            <a href="qsqlrecord.html">QSqlRecord</a> *buffer = cur.<a href="qsqlcursor.html#primeUpdate">primeUpdate</a>();
            double price = buffer-&gt;<a href="qsqlrecord.html#value">value</a>( "price" ).toDouble();
            double newprice = price * 1.05;
            buffer-&gt;<a href="qsqlrecord.html#setValue">setValue</a>( "price", newprice );
            cur.<a href="qsqlcursor.html#update">update</a>();
        }
    }

    return 0;
}
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