Revamp SQL examples to C++11

Changed signals and slots to new syntax, used nullptr and replaced
foreach with new C++11 range based for loops.
Also fixed a few minor flaws.

Task-number: QTBUG-60633
Change-Id: Ice4030133971912f96752d9d84c638c70fd73e35
Reviewed-by: Jesus Fernandez <Jesus.Fernandez@qt.io>
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 8 insertions, 5 deletions

diff --git a/examples/sql/masterdetail/main.cpp b/examples/sql/masterdetail/main.cpp
index cc1a1c4a21..9a4172e55f 100644
--- a/examples/sql/masterdetail/main.cpp
+++ b/examples/sql/masterdetail/main.cpp
@@ -48,11 +48,14 @@
 **
 ****************************************************************************/
 
-#include <QtWidgets>
-
 #include "database.h"
 #include "mainwindow.h"
 
+#include <QApplication>
+#include <QFile>
+
+#include <stdlib.h>
+
 int main(int argc, char *argv[])
 {
     Q_INIT_RESOURCE(masterdetail);
@@ -60,10 +63,10 @@ int main(int argc, char *argv[])
     QApplication app(argc, argv);
 
     if (!createConnection())
-        return 1;
+        return EXIT_FAILURE;
 
-    QFile *albumDetails = new QFile("albumdetails.xml");
-    MainWindow window("artists", "albums", albumDetails);
+    QFile albumDetails("albumdetails.xml");
+    MainWindow window("artists", "albums", &albumDetails);
     window.show();
     return app.exec();
 }