тут исходник

/*
*    controllTacticWindow.h
*/

#ifndef _CONTROLLTACTICWINDOW_H_
#define _CONTROLLTACTICWINDOW_H_
#include <QtGui>

namespace TacticalConditions {
    class ControlTacticalWindow : public QWidget {
        Q_OBJECT
        public:
            ControlTacticalWindow();

    };
}

#endif// _CONTROLLTACTICWINDOW_H_

/*
* controllTacticWindow.cpp
*/

#include "controltacticalwindow.h"

namespace TacticalConditions {
    ControlTacticalWindow::ControlTacticalWindow() : QWidget(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint) {
        setWindowTitle(tr("Items (double click to flip)"));
        setWindowOpacity(0.8);

        QVBoxLayout *layout = new QVBoxLayout;
        setLayout(layout);
        QPushButton *button;

        button = new QPushButton(QIcon(QString::fromUtf8(":/images/images/up.png")), tr(""));
        layout->addWidget(button);

        button = new QPushButton(tr("Add circle"));
        layout->addWidget(button);

        button = new QPushButton(tr("Add square"));
        layout->addWidget(button);

        layout->addStretch(1);
    }
}

    TacticalWindow::TacticalWindow(QWidget * parent) : QGraphicsView(parent) {
        setViewport(new QGLWidget(QGLFormat(QGL::SampleBuffers)));
        setViewportUpdateMode(QGraphicsView::FullViewportUpdate);
        OpenGLScene *scene = new OpenGLScene;
        setScene(scene);
        scene->addWidget(new ControlTacticalWindow());
               ......

    void OpenGLScene::drawBackground(QPainter *painter, const QRectF &) {
        if (painter->paintEngine()->type()
                != QPaintEngine::OpenGL) {
            qWarning("OpenGLScene: drawBackground needs a "
                     "QGLWidget to be set as viewport on the "
                     "graphics view");
            return;
        }
        glDrawPixels(m_image.width(), m_image.height(), GL_RGBA, GL_UNSIGNED_BYTE, m_image.bits());
    }