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#include <QtGui>

void mainWindowExample()

{

    QMdiArea *mdiArea = new QMdiArea;

//! [0]

    QMainWindow *mainWindow = new QMainWindow;

    mainWindow->setCentralWidget(mdiArea);

//! [0]

    mdiArea->addSubWindow(new QPushButton("Push Me Now!"));

    mainWindow->show();

}

void addingSubWindowsExample()

{

    QWidget *internalWidget1 = new QWidget;

    QWidget *internalWidget2 = new QWidget;

//! [1]

    QMdiArea mdiArea;

    QMdiSubWindow *subWindow1 = new QMdiSubWindow;

    subWindow1->setWidget(internalWidget1);

    subWindow1->setAttribute(Qt::WA_DeleteOnClose);

    mdiArea.addSubWindow(subWindow1);

    QMdiSubWindow *subWindow2 =

	mdiArea.addSubWindow(internalWidget2);

//! [1]

    subWindow1->show();

    subWindow2->show();

    mdiArea.show();

}

int main(int argv, char **args)

{

    QApplication app(argv, args);

    mainWindowExample();

    //addingSubWindowsExample();

   QAction *act = new QAction(qApp);

   act->setShortcut(Qt::ALT + Qt::Key_S);

   act->setShortcutContext( Qt::ApplicationShortcut );

   QObject::connect(act, SIGNAL(triggered()), qApp, SLOT(aboutQt()));

    QWidget widget5;

    widget5.show();

    widget5.addAction(act);

    return app.exec();

}