?? main.cpp
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/****************************************************************************** $Id: qt/main.cpp 3.3.4 edited Sep 10 2003 $**** Copyright (C) 1992-2002 Trolltech AS. 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 "main.h"#include <qdatatable.h>InvoiceItemCursor::InvoiceItemCursor() : QSqlCursor( "invoiceitem" ){ QSqlFieldInfo productName( "productname", QVariant::String ); append( productName ); setCalculated( productName.name(), TRUE );}QVariant InvoiceItemCursor::calculateField( const QString & name ){ if ( name == "productname" ) { QSqlQuery query( "SELECT name FROM prices WHERE id=" + field( "pricesid" )->value().toString() ); if ( query.next() ) return query.value( 0 ); } return QVariant( QString::null );}int main( int argc, char *argv[] ){ QApplication app( argc, argv ); if ( createConnections() ) { InvoiceItemCursor invoiceItemCursor; QDataTable *invoiceItemTable = new QDataTable( &invoiceItemCursor ); app.setMainWidget( invoiceItemTable ); invoiceItemTable->addColumn( "productname", "Product" ); invoiceItemTable->addColumn( "quantity", "Quantity" ); invoiceItemTable->addColumn( "paiddate", "Paid" ); invoiceItemTable->refresh(); invoiceItemTable->show(); return app.exec(); } return 1;}
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