mainwindow.cpp Example File

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 #include <QtGui>

 #include "arrowpad.h"
 #include "mainwindow.h"

 MainWindow::MainWindow()
 {
     arrowPad = new ArrowPad;
     setCentralWidget(arrowPad);

     exitAct = new QAction(tr("E&xit"), this);
     exitAct->setShortcuts(QKeySequence::Quit);
     connect(exitAct, SIGNAL(triggered()), this, SLOT(close()));

     fileMenu = menuBar()->addMenu(tr("&File"));
     fileMenu->addAction(exitAct);
 }