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main.cpp Example File
painting/svgviewer/main.cpp

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 #include <QApplication>
 #include <QString>
 #ifndef QT_NO_OPENGL
 #include <QGLFormat>
 #endif

 #include "mainwindow.h"

 int main(int argc, char **argv)
 {
     QApplication app(argc, argv);

     MainWindow window;
     if (argc == 2)
         window.openFile(argv[1]);
     else
         window.openFile(":/files/bubbles.svg");
     window.show();
     return app.exec();
 }


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Qt 4.3.5