<!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/doc/sql.doc:67 --> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> <title>sql/overview/subclass5/main.cpp Example File</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>sql/overview/subclass5/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 TQt. This example ** program may be used, distributed and modified without limitation. ** *****************************************************************************/ #include "main.h" #include <<a href="tqdatatable-h.html">tqdatatable.h</a>> <a name="f25"></a>InvoiceItemCursor::InvoiceItemCursor() : <a href="tqsqlcursor.html">TQSqlCursor</a>( "invoiceitem" ) { <a href="tqsqlfieldinfo.html">TQSqlFieldInfo</a> productName( "productname", TQVariant::String ); <a href="tqsqlcursor.html#append">append</a>( productName ); <a href="tqsqlcursor.html#setCalculated">setCalculated</a>( productName.<a href="tqsqlfieldinfo.html#name">name</a>(), TRUE ); <a href="tqsqlfieldinfo.html">TQSqlFieldInfo</a> productPrice( "price", TQVariant::Double ); <a href="tqsqlcursor.html#append">append</a>( productPrice ); <a href="tqsqlcursor.html#setCalculated">setCalculated</a>( productPrice.<a href="tqsqlfieldinfo.html#name">name</a>(), TRUE ); <a href="tqsqlfieldinfo.html">TQSqlFieldInfo</a> productCost( "cost", TQVariant::Double ); <a href="tqsqlcursor.html#append">append</a>( productCost ); <a href="tqsqlcursor.html#setCalculated">setCalculated</a>( productCost.<a href="tqsqlfieldinfo.html#name">name</a>(), TRUE ); } TQVariant InvoiceItemCursor::<a href="tqsqlcursor.html#calculateField">calculateField</a>( const <a href="tqstring.html">TQString</a> & name ) { if ( name == "productname" ) { <a href="tqsqlquery.html">TQSqlQuery</a> query( "SELECT name FROM prices WHERE id=" + <a href="tqsqlrecord.html#field">field</a>( "pricesid" )->value().toString() ); if ( query.<a href="tqsqlquery.html#next">next</a>() ) return query.<a href="tqsqlquery.html#value">value</a>( 0 ); } else if ( name == "price" ) { <a href="tqsqlquery.html">TQSqlQuery</a> query( "SELECT price FROM prices WHERE id=" + <a href="tqsqlrecord.html#field">field</a>( "pricesid" )->value().toString() ); if ( query.<a href="tqsqlquery.html#next">next</a>() ) return query.<a href="tqsqlquery.html#value">value</a>( 0 ); } else if ( name == "cost" ) { <a href="tqsqlquery.html">TQSqlQuery</a> query( "SELECT price FROM prices WHERE id=" + <a href="tqsqlrecord.html#field">field</a>( "pricesid" )->value().toString() ); if ( query.<a href="tqsqlquery.html#next">next</a>() ) return TQVariant( query.<a href="tqsqlquery.html#value">value</a>( 0 ).toDouble() * <a href="tqsqlquery.html#value">value</a>( "quantity").toDouble() ); } return TQVariant( TQString::null ); } TQSqlRecord *InvoiceItemCursor::<a href="tqsqlcursor.html#primeInsert">primeInsert</a>() { <a href="tqsqlrecord.html">TQSqlRecord</a> *buffer = <a href="tqsqlcursor.html#editBuffer">editBuffer</a>(); <a href="tqsqlquery.html">TQSqlQuery</a> query( "SELECT NEXTVAL( 'invoiceitem_seq' )" ); if ( query.<a href="tqsqlquery.html#next">next</a>() ) buffer-><a href="tqsqlrecord.html#setValue">setValue</a>( "id", query.<a href="tqsqlquery.html#value">value</a>( 0 ) ); buffer-><a href="tqsqlrecord.html#setValue">setValue</a>( "paiddate", TQDate::currentDate() ); buffer-><a href="tqsqlrecord.html#setValue">setValue</a>( "quantity", 1 ); return buffer; } int main( int argc, char *argv[] ) { <a href="ntqapplication.html">TQApplication</a> app( argc, argv ); if ( createConnections() ) { InvoiceItemCursor invoiceItemCursor; <a href="tqdatatable.html">TQDataTable</a> *invoiceItemTable = new <a href="tqdatatable.html">TQDataTable</a>( &invoiceItemCursor ); app.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( invoiceItemTable ); invoiceItemTable-><a href="tqdatatable.html#addColumn">addColumn</a>( "productname", "Product" ); invoiceItemTable-><a href="tqdatatable.html#addColumn">addColumn</a>( "price", "Price" ); invoiceItemTable-><a href="tqdatatable.html#addColumn">addColumn</a>( "quantity", "Quantity" ); invoiceItemTable-><a href="tqdatatable.html#addColumn">addColumn</a>( "cost", "Cost" ); invoiceItemTable-><a href="tqdatatable.html#addColumn">addColumn</a>( "paiddate", "Paid" ); invoiceItemTable-><a href="tqdatatable.html#refresh">refresh</a>(); invoiceItemTable-><a href="tqwidget.html#show">show</a>(); return app.<a href="ntqapplication.html#exec">exec</a>(); } return 1; } </pre><!-- eof --> <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>