source: tests/embedded/embedded.cpp@ 1003

#include <os2.h>

#include <QDebug>
#include <QtGui>

class VideoWidget : public QFrame
{
public:

    VideoWidget()
    {
        layout = new QHBoxLayout (this);
        layout->setContentsMargins (0, 0, 0, 0);
        setLayout (layout);
        stable = 0;
        show();
    }

    WId request()
    {
        stable = new QWidget();
        QPalette plt = palette();
        plt.setColor (QPalette::Window, Qt::black);
        stable->setPalette (plt);
        stable->setAutoFillBackground (true);
        stable->setAttribute (Qt::WA_PaintOnScreen, true);

        layout->addWidget (stable);

        return stable->winId();
    }

    void release()
    {
        layout->removeWidget (stable);
        stable->deleteLater();
        stable = 0;

        updateGeometry();
    }

    QHBoxLayout *layout;
    QWidget *stable;
};

class MainWindow : public QMainWindow
{
public:

    MainWindow()
    {
        QWidget *main = new QWidget();
        setCentralWidget (main);
        QVBoxLayout *mainLayout = new QVBoxLayout (main);
        main->setContentsMargins (0, 0, 0, 0);
        mainLayout->setSpacing (0);
        mainLayout->setMargin (0);

        QStackedWidget *stackCentralW = new QStackedWidget (main);

        stackCentralW->addWidget (new QLabel ("Background"));

        videoWidget = new VideoWidget();
        stackCentralW->addWidget (videoWidget);

        mainLayout->insertWidget (1, stackCentralW);

        mainLayout->insertWidget (2, new QLabel ("Controls"));

        stackCentralW->setCurrentWidget (videoWidget);

        id = videoWidget->request();

        startTimer (1000);
    }

    void timerEvent (QTimerEvent *)
    {
        qDebug() << "*** timer" << qDebugFmtHex (id);
        HWND hwnd = id;
        HPS hps = WinGetPS (hwnd);
        if (hps)
        {
            RECTL rcl;
//            WinQueryWindowRect (hwnd, &rcl);

            rcl.xLeft = 0;
            rcl.yBottom = 0;
            rcl.xRight = videoWidget->size().width();
            rcl.yTop = videoWidget->size().height();

            qDebug() << rcl.xRight << rcl.yTop;

            WinDrawBorder (hps, &rcl, 3, 3, CLR_RED, CLR_DARKGREEN, DB_INTERIOR);

            WinReleasePS (hps);
        }
    }

    VideoWidget *videoWidget;
    WId id;
};


int main (int argc, char **argv)
{
    QApplication app (argc, argv);
    MainWindow window;
    window.resize (400, 300);
    window.show();
    return app.exec();
}