#include <QMessageBox>

#include <QResizeEvent>

#include <QtGlobal>

    // Create widgets.

    listView = new QListView;

    listView->setFrameStyle(QFrame::Panel | QFrame::Raised);

    listView->setLineWidth(4);

    exitButton = new QPushButton(this);

    exitButton->setText("Exit");

    // define the model

    listView->setModel(zModel);

    listView->setItemDelegate(delegate);

    // create landscape layout

    layoutLandscape = new QHBoxLayout(this);

    layoutLandscape->addWidget(listView);

    layoutLandscape->addWidget(exitButton);

    //create portrait layout

    layoutPortrait = new QVBoxLayout(this);

    layoutPortrait->addWidget(listView);

    layoutPortrait->addWidget(exitButton);

    portLandLayout = new PLLayout();

    portLandLayout->setPLayout(layoutPortrait);

    portLandLayout->setLLayout(layoutLandscape);

    centralWidget = new QWidget();

    centralWidget->setLayout(portLandLayout);

    this->setCentralWidget(centralWidget);

void MainWindow::resizeEvent(QResizeEvent *e)

{

    portLandLayout->resizeEvent(e);

    // Call base class impl

    QWidget::resizeEvent(e);

}