--- a/Applications/Samples/Qt/MainWindow.cpp	Mon Aug 27 15:40:13 2018 +0200
+++ b/Applications/Samples/Qt/MainWindow.cpp	Mon Aug 27 16:22:08 2018 +0200
@@ -1,3 +1,23 @@
+/**
+ * Stone of Orthanc
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2018 Osimis S.A., Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
 #include "MainWindow.h"
 
 /**
@@ -7,13 +27,11 @@
 #include <ui_MainWindow.h>
 
 MainWindow::MainWindow(OrthancStone::BasicNativeApplicationContext& context, QWidget *parent) :
-  QMainWindow(parent),
-  ui_(new Ui::MainWindow),
-  context_(context)
+  QStoneMainWindow(context, parent),
+  ui_(new Ui::MainWindow)
 {
   ui_->setupUi(this);
-  cairoCentralWidget_ = ui_->cairoCentralWidget;
-  cairoCentralWidget_->SetContext(context_);
+  SetCentralStoneWidget(ui_->cairoCentralWidget);
 }
 
 MainWindow::~MainWindow()