main.cpp Example File

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 #include <QtGui>

 #include "mainwindow.h"

 int main(int argv, char *args[])
 {
     Q_INIT_RESOURCE(diagramscene);

     QApplication app(argv, args);
     MainWindow mainWindow;
     mainWindow.setGeometry(100, 100, 800, 500);
     mainWindow.show();

     return app.exec();
 }