1 files changed, 57 insertions, 0 deletions
diff --git a/examples/sql/overview/subclass3/main.cpp b/examples/sql/overview/subclass3/main.cpp
new file mode 100644
index 000000000..db77b855e
--- /dev/null
+++ b/examples/sql/overview/subclass3/main.cpp
@@ -0,0 +1,57 @@
+/****************************************************************************
+**
+** Copyright (C) 1992-2008 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 <qdatatable.h>
+
+InvoiceItemCursor::InvoiceItemCursor() :
+    TQSqlCursor( "invoiceitem" )
+{
+    TQSqlFieldInfo productName( "productname", TQVariant::String );
+    append( productName );
+    setCalculated( productName.name(), TRUE );
+}
+
+
+TQVariant InvoiceItemCursor::calculateField( const TQString & name )
+{
+    if ( name == "productname" ) {
+	TQSqlQuery query( "SELECT name FROM prices WHERE id=" +
+		     field( "pricesid" )->value().toString() );
+	if ( query.next() )
+	    return query.value( 0 );
+    }
+
+    return TQVariant( TQString::null );
+}
+
+
+int main( int argc, char *argv[] )
+{
+    TQApplication app( argc, argv );
+
+    if ( createConnections() ) {
+	InvoiceItemCursor invoiceItemCursor;
+
+	TQDataTable *invoiceItemTable = new TQDataTable( &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;
+}