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# mainwindow.cpp Example File
demos/sub-attaq/mainwindow.cpp

     /****************************************************************************
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     ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
     ** All rights reserved.
     ** Contact: Nokia Corporation (qt-info@nokia.com)
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     ** This file is part of the QtCore module of the Qt Toolkit.
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     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
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     //Own
     #include "mainwindow.h"
     #include "graphicsscene.h"

     //Qt
     #include <QGraphicsView>

     #ifdef QT_NO_OPENGL
         #include <QtGui/QMenuBar>
         #include <QtGui/QLayout>
         #include <QtGui/QApplication>
     #else
         #include <QtOpenGL/QtOpenGL>
     #endif

     MainWindow::MainWindow() : QMainWindow(0)
     {
         QMenu *file = menuBar()->addMenu(tr("&File"));

         QAction *newAction = file->addAction(tr("New Game"));
         newAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_N));
         QAction *quitAction = file->addAction(tr("Quit"));
         quitAction->setShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q));

         if (QApplication::arguments().contains("-fullscreen")) {
             scene = new GraphicsScene(0, 0, 750, 400, GraphicsScene::Small);
             setWindowState(Qt::WindowFullScreen);
         } else {
             scene = new GraphicsScene(0, 0, 880, 630);
             layout()->setSizeConstraint(QLayout::SetFixedSize);
         }

         view = new QGraphicsView(scene, this);
         view->setAlignment(Qt::AlignLeft | Qt::AlignTop);
         scene->setupScene(newAction, quitAction);
     #ifndef QT_NO_OPENGL
         view->setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
     #endif

         setCentralWidget(view);
     }