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diff --git a/src/plugins/platforms/windows/qwindowsscreen.cpp b/src/plugins/platforms/windows/qwindowsscreen.cpp
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+++ b/src/plugins/platforms/windows/qwindowsscreen.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+** This file is part of the plugins of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwindowsscreen.h"
+#include "qwindowscontext.h"
+#include "qwindowswindow.h"
+#include "pixmaputils.h"
+#include "qwindowscursor.h"
+
+#include "qtwindows_additional.h"
+
+#include <QtGui/QPixmap>
+#include <QtGui/QGuiApplication>
+#include <QtGui/QScreen>
+
+#include <QtCore/QDebug>
+
+QT_BEGIN_NAMESPACE
+
+typedef QPair<int, int> DPI;
+
+QWindowsScreenData::QWindowsScreenData() :
+    dpi(96, 96),
+    depth(32),
+    format(QImage::Format_ARGB32_Premultiplied), primary(false)
+{
+}
+
+static inline DPI deviceDPI(HDC hdc)
+{
+    return DPI(GetDeviceCaps(hdc, LOGPIXELSX), GetDeviceCaps(hdc, LOGPIXELSY));
+}
+
+static inline QSize deviceSizeMM(const QSize &pixels, const DPI &dpi)
+{
+    const qreal inchToMM = 25.4;
+    const qreal h = qreal(pixels.width())  / qreal(dpi.first)  * inchToMM;
+    const qreal v = qreal(pixels.height()) / qreal(dpi.second) * inchToMM;
+    return QSize(qRound(h), qRound(v));
+}
+
+static inline DPI deviceDPI(const QSize &pixels, const QSize &physicalSizeMM)
+{
+    const qreal inchToMM = 25.4;
+    const qreal h = qreal(pixels.width())  / (qreal(physicalSizeMM.width())  / inchToMM);
+    const qreal v = qreal(pixels.height()) / (qreal(physicalSizeMM.height()) / inchToMM);
+    return DPI(qRound(v), qRound(h));
+}
+
+typedef QList<QWindowsScreenData> WindowsScreenDataList;
+
+// from QDesktopWidget, taking WindowsScreenDataList as LPARAM
+BOOL QT_WIN_CALLBACK monitorEnumCallback(HMONITOR hMonitor, HDC, LPRECT, LPARAM p)
+{
+    MONITORINFOEX info;
+    memset(&info, 0, sizeof(MONITORINFOEX));
+    info.cbSize = sizeof(MONITORINFOEX);
+    if (GetMonitorInfo(hMonitor, &info) == FALSE)
+        return TRUE;
+
+    WindowsScreenDataList *result = reinterpret_cast<WindowsScreenDataList *>(p);
+    QWindowsScreenData data;
+    data.geometry = QRect(QPoint(info.rcMonitor.left, info.rcMonitor.top), QPoint(info.rcMonitor.right - 1, info.rcMonitor.bottom - 1));
+    if (HDC hdc = CreateDC(info.szDevice, NULL, NULL, NULL)) {
+        data.dpi = deviceDPI(hdc);
+        DeleteDC(hdc);
+    } else {
+        qWarning("%s: Unable to obtain handle for monitor '%s', defaulting to %d DPI.",
+                 __FUNCTION__, qPrintable(QString::fromWCharArray(info.szDevice)),
+                 data.dpi.first);
+    }
+    data.physicalSizeMM = deviceSizeMM(data.geometry.size(), data.dpi);
+    data.geometry = QRect(QPoint(info.rcMonitor.left, info.rcMonitor.top), QPoint(info.rcMonitor.right - 1, info.rcMonitor.bottom - 1));
+    data.availableGeometry = QRect(QPoint(info.rcWork.left, info.rcWork.top), QPoint(info.rcWork.right - 1, info.rcWork.bottom - 1));
+    data.primary = (info.dwFlags & MONITORINFOF_PRIMARY) != 0;
+    result->append(data);
+    return TRUE;
+}
+
+/*!
+    \class QWindowsScreen
+    \brief Windows screen.
+    \ingroup qt-lighthouse-win
+*/
+
+QWindowsScreen::QWindowsScreen(const QWindowsScreenData &data) :
+    m_data(data), m_cursor(this)
+{
+}
+
+QList<QPlatformScreen *> QWindowsScreen::screens()
+{
+    // Retrieve monitors and add static depth information to each.
+    WindowsScreenDataList data;
+    EnumDisplayMonitors(0, 0, monitorEnumCallback, (LPARAM)&data);
+
+    const int depth = QWindowsContext::instance()->screenDepth();
+    const QImage::Format format = depth == 16 ? QImage::Format_RGB16 : QImage::Format_RGB32;
+    QList<QPlatformScreen *> result;
+
+    const WindowsScreenDataList::const_iterator scend = data.constEnd();
+    for (WindowsScreenDataList::const_iterator it = data.constBegin(); it != scend; ++it) {
+        QWindowsScreenData d = *it;
+        d.depth = depth;
+        d.format = format;
+        if (QWindowsContext::verboseIntegration)
+            qDebug() << "Screen" << d.geometry << d.availableGeometry << d.primary
+                     << " physical " << d.physicalSizeMM << " DPI" << d.dpi
+                     << "Depth: " << d.depth << " Format: " << d.format;
+        result.append(new QWindowsScreen(d));
+    }
+    return result;
+}
+
+QPixmap QWindowsScreen::grabWindow(WId window, int x, int y, int width, int height) const
+{
+    if (QWindowsContext::verboseIntegration)
+        qDebug() << __FUNCTION__ << window << x << y << width << height;
+    RECT r;
+    HWND hwnd = (HWND)window;
+    GetClientRect(hwnd, &r);
+
+    if (width < 0) width = r.right - r.left;
+    if (height < 0) height = r.bottom - r.top;
+
+    // Create and setup bitmap
+    HDC display_dc = GetDC(0);
+    HDC bitmap_dc = CreateCompatibleDC(display_dc);
+    HBITMAP bitmap = CreateCompatibleBitmap(display_dc, width, height);
+    HGDIOBJ null_bitmap = SelectObject(bitmap_dc, bitmap);
+
+    // copy data
+    HDC window_dc = GetDC(hwnd);
+    BitBlt(bitmap_dc, 0, 0, width, height, window_dc, x, y, SRCCOPY | CAPTUREBLT);
+
+    // clean up all but bitmap
+    ReleaseDC(hwnd, window_dc);
+    SelectObject(bitmap_dc, null_bitmap);
+    DeleteDC(bitmap_dc);
+
+    const QPixmap pixmap = qPixmapFromWinHBITMAP(bitmap, HBitmapNoAlpha);
+
+    DeleteObject(bitmap);
+    ReleaseDC(0, display_dc);
+
+    return pixmap;
+}
+
+/*!
+    \brief Find a top level window taking the flags of ChildWindowFromPointEx.
+*/
+
+QWindow *QWindowsScreen::findTopLevelAt(const QPoint &point, unsigned flags)
+{
+    QWindow* result = 0;
+    if (QPlatformWindow *bw = QWindowsContext::instance()->
+            findPlatformWindowAt(GetDesktopWindow(), point, flags))
+        result = QWindowsWindow::topLevelOf(bw->window());
+    if (QWindowsContext::verboseWindows)
+        qDebug() << __FUNCTION__ << point << flags << result;
+    return result;
+}
+
+QWindow *QWindowsScreen::windowAt(const QPoint &screenPoint, unsigned flags)
+{
+    QWindow* result = 0;
+    if (QPlatformWindow *bw = QWindowsContext::instance()->
+            findPlatformWindowAt(GetDesktopWindow(), screenPoint, flags))
+        result = bw->window();
+    if (QWindowsContext::verboseWindows)
+        qDebug() << __FUNCTION__ << screenPoint << " returns " << result;
+    return result;
+}
+
+QWindow *QWindowsScreen::windowUnderMouse(unsigned flags)
+{
+    return QWindowsScreen::windowAt(QWindowsCursor::mousePosition(), flags);
+}
+
+QWindowsScreen *QWindowsScreen::screenOf(const QWindow *w)
+{
+    if (w)
+        if (const QScreen *s = w->screen())
+            if (QPlatformScreen *pscr = s->handle())
+                return static_cast<QWindowsScreen *>(pscr);
+    if (const QScreen *ps = QGuiApplication::primaryScreen())
+        if (QPlatformScreen *ppscr = ps->handle())
+            return static_cast<QWindowsScreen *>(ppscr);
+    return 0;
+}
+
+QT_END_NAMESPACE