Windows: Build print support plugin directly into QtPrintSupport

Task-number: QTBUG-83259
Change-Id: I23042e1eb89d407692a96bfb2d6c4efdddbfb50f
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

14 files changed, 1078 insertions, 25 deletions

diff --git a/src/printsupport/CMakeLists.txt b/src/printsupport/CMakeLists.txt
index 6372030148..1967f3d29a 100644
--- a/src/printsupport/CMakeLists.txt
+++ b/src/printsupport/CMakeLists.txt
@@ -57,20 +57,25 @@ qt_internal_extend_target(PrintSupport CONDITION MACOS
         "platform/macos/qcocoaprintersupport.mm"
 )
 
-qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_printpreviewwidget
-    SOURCES
-        kernel/qpaintengine_preview.cpp kernel/qpaintengine_preview_p.h
-        widgets/qprintpreviewwidget.cpp widgets/qprintpreviewwidget.h
-)
-
 qt_internal_extend_target(PrintSupport CONDITION WIN32
     SOURCES
-        kernel/qprintengine_win.cpp kernel/qprintengine_win_p.h
+        platform/windows/qprintengine_win.cpp platform/windows/qprintengine_win_p.h
+        platform/windows/qwindowsprintdevice.cpp platform/windows/qwindowsprintdevice_p.h
+        platform/windows/qwindowsprintersupport.cpp platform/windows/qwindowsprintersupport_p.h
     LIBRARIES
-        comdlg32
         gdi32
         user32
+    PUBLIC_LIBRARIES
+        comdlg32
         winspool
+    NO_PCH_SOURCES
+        "platform/windows/qwindowsprintersupport.cpp"
+)
+
+qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_printpreviewwidget
+    SOURCES
+        kernel/qpaintengine_preview.cpp kernel/qpaintengine_preview_p.h
+        widgets/qprintpreviewwidget.cpp widgets/qprintpreviewwidget.h
 )
 
 qt_internal_extend_target(PrintSupport CONDITION QT_FEATURE_cups AND UNIX AND NOT APPLE
diff --git a/src/printsupport/dialogs/qpagesetupdialog_win.cpp b/src/printsupport/dialogs/qpagesetupdialog_win.cpp
index 464381bbe4..2e2b41b372 100644
--- a/src/printsupport/dialogs/qpagesetupdialog_win.cpp
+++ b/src/printsupport/dialogs/qpagesetupdialog_win.cpp
@@ -41,7 +41,7 @@
 
 #include <qapplication.h>
 
-#include "../kernel/qprintengine_win_p.h"
+#include <private/qprintengine_win_p.h>
 #include "qpagesetupdialog_p.h"
 #include "qprinter.h"
 #include <qpa/qplatformnativeinterface.h>
diff --git a/src/printsupport/dialogs/qprintdialog_win.cpp b/src/printsupport/dialogs/qprintdialog_win.cpp
index c103bd911d..4f2ee83f62 100644
--- a/src/printsupport/dialogs/qprintdialog_win.cpp
+++ b/src/printsupport/dialogs/qprintdialog_win.cpp
@@ -47,7 +47,7 @@
 #include <private/qapplication_p.h>
 
 #include "qabstractprintdialog_p.h"
-#include "../kernel/qprintengine_win_p.h"
+#include <private/qprintengine_win_p.h>
 #include "../kernel/qprinter_p.h"
 
 #if !defined(PD_NOCURRENTPAGE)
diff --git a/src/printsupport/kernel/kernel.pri b/src/printsupport/kernel/kernel.pri
index 5c0feaf7a9..c47ea9c87c 100644
--- a/src/printsupport/kernel/kernel.pri
+++ b/src/printsupport/kernel/kernel.pri
@@ -28,15 +28,6 @@ qtConfig(printpreviewwidget) {
     SOURCES += $$PWD/qpaintengine_preview.cpp
 }
 
-win32 {
-        HEADERS += \
-                $$PWD/qprintengine_win_p.h
-        SOURCES += \
-                $$PWD/qprintengine_win.cpp
-        LIBS_PRIVATE += -lwinspool -lcomdlg32
-        QMAKE_USE_PRIVATE += user32 gdi32
-}
-
 unix:!darwin:qtConfig(cups) {
         SOURCES += $$PWD/qcups.cpp
         HEADERS += $$PWD/qcups_p.h
diff --git a/src/printsupport/kernel/qprintengine_win.cpp b/src/printsupport/platform/windows/qprintengine_win.cpp
index e8bbbcfb1e..3d00f2683c 100644
--- a/src/printsupport/kernel/qprintengine_win.cpp
+++ b/src/printsupport/platform/windows/qprintengine_win.cpp
@@ -1,9 +1,9 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2020 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
diff --git a/src/printsupport/kernel/qprintengine_win_p.h b/src/printsupport/platform/windows/qprintengine_win_p.h
index 878de9a7ac..eb8609e511 100644
--- a/src/printsupport/kernel/qprintengine_win_p.h
+++ b/src/printsupport/platform/windows/qprintengine_win_p.h
@@ -1,9 +1,9 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2020 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
-** This file is part of the QtGui module of the Qt Toolkit.
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
 ** Commercial License Usage
@@ -44,8 +44,8 @@
 //  W A R N I N G
 //  -------------
 //
-// This file is not part of the Qt API.  It exists for the convenience
-// of other Qt classes.  This header file may change from version to
+// This file is not part of the Qt API. It exists for the convenience
+// of other Qt classes. This header file may change from version to
 // version without notice, or even be removed.
 //
 // We mean it.
diff --git a/src/printsupport/platform/windows/qwindowsprintdevice.cpp b/src/printsupport/platform/windows/qwindowsprintdevice.cpp
new file mode 100644
index 0000000000..5ccc12fe9f
--- /dev/null
+++ b/src/printsupport/platform/windows/qwindowsprintdevice.cpp
@@ -0,0 +1,572 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 John Layt <jlayt@kde.org>
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwindowsprintdevice_p.h"
+
+#include <QtCore/qdebug.h>
+
+#ifndef DC_COLLATE
+#  define DC_COLLATE 22
+#endif
+
+QT_BEGIN_NAMESPACE
+
+QT_WARNING_DISABLE_GCC("-Wsign-compare")
+typedef QList<QWindowsPrinterInfo> WindowsPrinterLookup;
+Q_GLOBAL_STATIC(WindowsPrinterLookup, windowsDeviceLookup);
+
+extern qreal qt_pointMultiplier(QPageLayout::Unit unit);
+
+static inline uint qwcsnlen(const wchar_t *str, uint maxlen)
+{
+    uint length = 0;
+    if (str) {
+        while (length < maxlen && *str++)
+            length++;
+    }
+    return length;
+}
+
+static QPrint::InputSlot paperBinToInputSlot(int windowsId, const QString &name)
+{
+    QPrint::InputSlot slot;
+    slot.name = name;
+    int i;
+    for (i = 0; inputSlotMap[i].id != QPrint::CustomInputSlot; ++i) {
+        if (inputSlotMap[i].windowsId == windowsId) {
+            slot.key = inputSlotMap[i].key;
+            slot.id = inputSlotMap[i].id;
+            slot.windowsId = inputSlotMap[i].windowsId;
+            return slot;
+        }
+    }
+    slot.key = inputSlotMap[i].key;
+    slot.id = inputSlotMap[i].id;
+    slot.windowsId = windowsId;
+    return slot;
+}
+
+static LPDEVMODE getDevmode(HANDLE hPrinter, const QString &printerId)
+{
+    LPWSTR printerIdUtf16 = const_cast<LPWSTR>(reinterpret_cast<LPCWSTR>(printerId.utf16()));
+    // Allocate the required DEVMODE buffer
+    LONG dmSize = DocumentProperties(NULL, hPrinter, printerIdUtf16, NULL, NULL, 0);
+    if (dmSize <= 0)
+        return nullptr;
+    LPDEVMODE pDevMode = reinterpret_cast<LPDEVMODE>(malloc(dmSize));
+     // Get the default DevMode
+    LONG result = DocumentProperties(NULL, hPrinter, printerIdUtf16, pDevMode, NULL, DM_OUT_BUFFER);
+    if (result != IDOK) {
+        free(pDevMode);
+        pDevMode = nullptr;
+    }
+    return pDevMode;
+}
+
+QWindowsPrintDevice::QWindowsPrintDevice()
+    : QPlatformPrintDevice(),
+      m_hPrinter(0)
+{
+}
+
+QWindowsPrintDevice::QWindowsPrintDevice(const QString &id)
+    : QPlatformPrintDevice(id),
+      m_hPrinter(0)
+{
+    // First do a fast lookup to see if printer exists, if it does then open it
+    if (!id.isEmpty() && QWindowsPrintDevice::availablePrintDeviceIds().contains(id)) {
+        if (OpenPrinter(const_cast<LPWSTR>(wcharId()), &m_hPrinter, nullptr)) {
+            DWORD needed = 0;
+            GetPrinter(m_hPrinter, 2, 0, 0, &needed);
+            QScopedArrayPointer<BYTE> buffer(new BYTE[needed]);
+            if (GetPrinter(m_hPrinter, 2, buffer.data(), needed, &needed)) {
+                PPRINTER_INFO_2 info = reinterpret_cast<PPRINTER_INFO_2>(buffer.data());
+                m_name = QString::fromWCharArray(info->pPrinterName);
+                m_location = QString::fromWCharArray(info->pLocation);
+                m_makeAndModel = QString::fromWCharArray(info->pDriverName); // TODO Check is not available elsewhere
+                m_isRemote = info->Attributes & PRINTER_ATTRIBUTE_NETWORK;
+            }
+            QWindowsPrinterInfo m_info;
+            m_info.m_id = m_id;
+            m_info.m_name = m_name;
+            m_info.m_location = m_location;
+            m_info.m_makeAndModel = m_makeAndModel;
+            m_info.m_isRemote = m_isRemote;
+            m_infoIndex = windowsDeviceLookup()->indexOf(m_info);
+            if (m_infoIndex != -1) {
+                m_info = windowsDeviceLookup()->at(m_infoIndex);
+                m_havePageSizes = m_info.m_havePageSizes;
+                m_pageSizes = m_info.m_pageSizes;
+                m_haveResolutions = m_info.m_haveResolutions;
+                m_resolutions = m_info.m_resolutions;
+                m_haveCopies = m_info.m_haveCopies;
+                m_supportsMultipleCopies = m_info.m_supportsMultipleCopies;
+                m_supportsCollateCopies = m_info.m_supportsCollateCopies;
+                m_haveMinMaxPageSizes = m_info.m_haveMinMaxPageSizes;
+                m_minimumPhysicalPageSize = m_info.m_minimumPhysicalPageSize;
+                m_maximumPhysicalPageSize = m_info.m_maximumPhysicalPageSize;
+                m_supportsCustomPageSizes = m_info.m_supportsCustomPageSizes;
+                m_haveInputSlots = m_info.m_haveInputSlots;
+                m_inputSlots = m_info.m_inputSlots;
+                m_haveOutputBins = m_info.m_haveOutputBins;
+                m_outputBins = m_info.m_outputBins;
+                m_haveDuplexModes = m_info.m_haveDuplexModes;
+                m_duplexModes = m_info.m_duplexModes;
+                m_haveColorModes = m_info.m_haveColorModes;
+                m_colorModes = m_info.m_colorModes;
+                m_infoIndex = windowsDeviceLookup()->indexOf(m_info);
+            } else {
+                windowsDeviceLookup()->append(m_info);
+                m_infoIndex = windowsDeviceLookup()->count() - 1;
+            }
+        }
+    }
+}
+
+QWindowsPrintDevice::~QWindowsPrintDevice()
+{
+    ClosePrinter(m_hPrinter);
+}
+
+bool QWindowsPrintDevice::isValid() const
+{
+    return m_hPrinter;
+}
+
+bool QWindowsPrintDevice::isDefault() const
+{
+    return m_id == defaultPrintDeviceId();
+}
+
+QPrint::DeviceState QWindowsPrintDevice::state() const
+{
+    DWORD needed = 0;
+    GetPrinter(m_hPrinter, 6, 0, 0, &needed);
+    QScopedArrayPointer<BYTE> buffer(new BYTE[needed]);
+
+    if (GetPrinter(m_hPrinter, 6, buffer.data(), needed, &needed)) {
+        PPRINTER_INFO_6 info = reinterpret_cast<PPRINTER_INFO_6>(buffer.data());
+        // TODO Check mapping
+        if (info->dwStatus == 0
+            || (info->dwStatus & PRINTER_STATUS_WAITING) == PRINTER_STATUS_WAITING
+            || (info->dwStatus & PRINTER_STATUS_POWER_SAVE) == PRINTER_STATUS_POWER_SAVE) {
+            return QPrint::Idle;
+        } else if ((info->dwStatus & PRINTER_STATUS_PRINTING) == PRINTER_STATUS_PRINTING
+                   || (info->dwStatus & PRINTER_STATUS_BUSY) == PRINTER_STATUS_BUSY
+                   || (info->dwStatus & PRINTER_STATUS_INITIALIZING) == PRINTER_STATUS_INITIALIZING
+                   || (info->dwStatus & PRINTER_STATUS_IO_ACTIVE) == PRINTER_STATUS_IO_ACTIVE
+                   || (info->dwStatus & PRINTER_STATUS_PROCESSING) == PRINTER_STATUS_PROCESSING
+                   || (info->dwStatus & PRINTER_STATUS_WARMING_UP) == PRINTER_STATUS_WARMING_UP) {
+            return QPrint::Active;
+        }
+    }
+
+    return QPrint::Error;
+}
+
+void QWindowsPrintDevice::loadPageSizes() const
+{
+    // Get the number of paper sizes and check all 3 attributes have same count
+    DWORD paperCount = DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERNAMES, NULL, NULL);
+    if (int(paperCount) > 0
+        && DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERSIZE, NULL, NULL) == paperCount
+        && DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERS, NULL, NULL) == paperCount) {
+
+        QScopedArrayPointer<wchar_t> paperNames(new wchar_t[paperCount*64]);
+        QScopedArrayPointer<POINT> winSizes(new POINT[paperCount]);
+        QScopedArrayPointer<wchar_t> papers(new wchar_t[paperCount]);
+
+        // Get the details and match the default paper size
+        if (DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERNAMES, paperNames.data(), NULL) == paperCount
+            && DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERSIZE, (wchar_t *)winSizes.data(), NULL) == paperCount
+            && DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_PAPERS, papers.data(), NULL) == paperCount) {
+
+            // Returned size is in tenths of a millimeter
+            const qreal multiplier = qt_pointMultiplier(QPageLayout::Millimeter);
+            for (int i = 0; i < int(paperCount); ++i) {
+                QSize size = QSize(qRound((winSizes[i].x / 10.0) * multiplier), qRound((winSizes[i].y / 10.0) * multiplier));
+                wchar_t *paper = paperNames.data() + (i * 64);
+                QString name = QString::fromWCharArray(paper, qwcsnlen(paper, 64));
+                m_pageSizes.append(createPageSize(papers[i], size, name));
+            }
+
+        }
+    }
+
+    m_havePageSizes = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_havePageSizes = true;
+    info[m_infoIndex].m_pageSizes = m_pageSizes;
+}
+
+QPageSize QWindowsPrintDevice::defaultPageSize() const
+{
+    if (!m_havePageSizes)
+        loadPageSizes();
+
+    QPageSize pageSize;
+
+    if (LPDEVMODE pDevMode = getDevmode(m_hPrinter, m_id)) {
+        // Get the default paper size
+        if (pDevMode->dmFields & DM_PAPERSIZE) {
+            // Find the supported page size that matches, in theory default should be one of them
+            for (const QPageSize &ps : m_pageSizes) {
+                if (ps.windowsId() == pDevMode->dmPaperSize) {
+                    pageSize = ps;
+                    break;
+                }
+            }
+        }
+        // Clean-up
+        free(pDevMode);
+    }
+
+    return pageSize;
+}
+
+QMarginsF QWindowsPrintDevice::printableMargins(const QPageSize &pageSize,
+                                                QPageLayout::Orientation orientation,
+                                                int resolution) const
+{
+    // TODO This is slow, need to cache values or find better way!
+    // Modify the DevMode to get the DC printable margins in device pixels
+    QMarginsF margins = QMarginsF(0, 0, 0, 0);
+    DWORD needed = 0;
+    GetPrinter(m_hPrinter, 2, 0, 0, &needed);
+    QScopedArrayPointer<BYTE> buffer(new BYTE[needed]);
+    if (GetPrinter(m_hPrinter, 2, buffer.data(), needed, &needed)) {
+        PPRINTER_INFO_2 info = reinterpret_cast<PPRINTER_INFO_2>(buffer.data());
+        LPDEVMODE devMode = info->pDevMode;
+        bool separateDevMode = false;
+        if (!devMode) {
+            // GetPrinter() didn't include the DEVMODE. Get it a different way.
+            devMode = getDevmode(m_hPrinter, m_id);
+            if (!devMode)
+                return margins;
+            separateDevMode = true;
+        }
+
+        HDC pDC = CreateDC(NULL, (LPWSTR)m_id.utf16(), NULL, devMode);
+        if (pageSize.id() == QPageSize::Custom || pageSize.windowsId() <= 0 || pageSize.windowsId() > DMPAPER_LAST) {
+            devMode->dmPaperSize =  0;
+            devMode->dmPaperWidth = pageSize.size(QPageSize::Millimeter).width() * 10.0;
+            devMode->dmPaperLength = pageSize.size(QPageSize::Millimeter).height() * 10.0;
+        } else {
+            devMode->dmPaperSize =  pageSize.windowsId();
+        }
+        devMode->dmPrintQuality = resolution;
+        devMode->dmOrientation = orientation == QPageLayout::Portrait ? DMORIENT_PORTRAIT : DMORIENT_LANDSCAPE;
+        ResetDC(pDC, devMode);
+        const int dpiWidth = GetDeviceCaps(pDC, LOGPIXELSX);
+        const int dpiHeight = GetDeviceCaps(pDC, LOGPIXELSY);
+        const qreal wMult = 72.0 / dpiWidth;
+        const qreal hMult = 72.0 / dpiHeight;
+        const qreal physicalWidth = GetDeviceCaps(pDC, PHYSICALWIDTH) * wMult;
+        const qreal physicalHeight = GetDeviceCaps(pDC, PHYSICALHEIGHT) * hMult;
+        const qreal printableWidth = GetDeviceCaps(pDC, HORZRES) * wMult;
+        const qreal printableHeight = GetDeviceCaps(pDC, VERTRES) * hMult;
+        const qreal leftMargin = GetDeviceCaps(pDC, PHYSICALOFFSETX)* wMult;
+        const qreal topMargin = GetDeviceCaps(pDC, PHYSICALOFFSETY) * hMult;
+        const qreal rightMargin = physicalWidth - leftMargin - printableWidth;
+        const qreal bottomMargin = physicalHeight - topMargin - printableHeight;
+        margins = QMarginsF(leftMargin, topMargin, rightMargin, bottomMargin);
+        if (separateDevMode)
+            free(devMode);
+        DeleteDC(pDC);
+    }
+    return margins;
+}
+
+void QWindowsPrintDevice::loadResolutions() const
+{
+    DWORD resCount = DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_ENUMRESOLUTIONS, NULL, NULL);
+    if (int(resCount) > 0) {
+        QScopedArrayPointer<LONG> resolutions(new LONG[resCount*2]);
+        // Get the details and match the default paper size
+        if (DeviceCapabilities((LPWSTR)m_id.utf16(), NULL, DC_ENUMRESOLUTIONS, (LPWSTR)resolutions.data(), NULL) == resCount) {
+            for (int i = 0; i < int(resCount * 2); i += 2)
+                m_resolutions.append(resolutions[i+1]);
+        }
+    }
+    m_haveResolutions = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveResolutions = true;
+    info[m_infoIndex].m_resolutions = m_resolutions;
+}
+
+int QWindowsPrintDevice::defaultResolution() const
+{
+    int resolution = 72;  // TODO Set a sensible default?
+
+    if (LPDEVMODE pDevMode = getDevmode(m_hPrinter, m_id)) {
+        // Get the default resolution
+        if (pDevMode->dmFields & DM_YRESOLUTION) {
+            if (pDevMode->dmPrintQuality > 0)
+                resolution = pDevMode->dmPrintQuality;
+            else
+                resolution = pDevMode->dmYResolution;
+        }
+        // Clean-up
+        free(pDevMode);
+    }
+    return resolution;
+}
+
+void QWindowsPrintDevice::loadInputSlots() const
+{
+    const auto printerId = wcharId();
+    DWORD binCount = DeviceCapabilities(printerId, nullptr, DC_BINS, nullptr, nullptr);
+    if (int(binCount) > 0
+        && DeviceCapabilities(printerId, nullptr, DC_BINNAMES, nullptr, nullptr) == binCount) {
+
+        QScopedArrayPointer<WORD> bins(new WORD[binCount]);
+        QScopedArrayPointer<wchar_t> binNames(new wchar_t[binCount*24]);
+
+        // Get the details and match the default paper size
+        if (DeviceCapabilities(printerId, nullptr, DC_BINS,
+                               reinterpret_cast<LPWSTR>(bins.data()), nullptr) == binCount
+            && DeviceCapabilities(printerId, nullptr, DC_BINNAMES, binNames.data(),
+                                  nullptr) == binCount) {
+
+            for (int i = 0; i < int(binCount); ++i) {
+                wchar_t *binName = binNames.data() + (i * 24);
+                QString name = QString::fromWCharArray(binName, qwcsnlen(binName, 24));
+                m_inputSlots.append(paperBinToInputSlot(bins[i], name));
+            }
+
+        }
+    }
+
+    m_haveInputSlots = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveInputSlots = true;
+    info[m_infoIndex].m_inputSlots = m_inputSlots;
+}
+
+QPrint::InputSlot QWindowsPrintDevice::defaultInputSlot() const
+{
+    QPrint::InputSlot inputSlot = QPlatformPrintDevice::defaultInputSlot();;
+
+    if (LPDEVMODE pDevMode = getDevmode(m_hPrinter, m_id)) {
+        // Get the default input slot
+        if (pDevMode->dmFields & DM_DEFAULTSOURCE) {
+            QPrint::InputSlot tempSlot = paperBinToInputSlot(pDevMode->dmDefaultSource, QString());
+            const auto inputSlots = supportedInputSlots();
+            for (const QPrint::InputSlot &slot : inputSlots) {
+                if (slot.key == tempSlot.key) {
+                    inputSlot = slot;
+                    break;
+                }
+            }
+        }
+        // Clean-up
+        free(pDevMode);
+    }
+    return inputSlot;
+}
+
+void QWindowsPrintDevice::loadOutputBins() const
+{
+    m_outputBins.append(QPlatformPrintDevice::defaultOutputBin());
+    m_haveOutputBins = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveOutputBins = true;
+    info[m_infoIndex].m_outputBins = m_outputBins;
+}
+
+void QWindowsPrintDevice::loadDuplexModes() const
+{
+    m_duplexModes.append(QPrint::DuplexNone);
+    DWORD duplex = DeviceCapabilities(wcharId(), nullptr, DC_DUPLEX, nullptr, nullptr);
+    if (int(duplex) == 1) {
+        // TODO Assume if duplex flag supports both modes
+        m_duplexModes.append(QPrint::DuplexAuto);
+        m_duplexModes.append(QPrint::DuplexLongSide);
+        m_duplexModes.append(QPrint::DuplexShortSide);
+    }
+    m_haveDuplexModes = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveDuplexModes = true;
+    info[m_infoIndex].m_duplexModes = m_duplexModes;
+}
+
+QPrint::DuplexMode QWindowsPrintDevice::defaultDuplexMode() const
+{
+    QPrint::DuplexMode duplexMode = QPrint::DuplexNone;
+
+    if (LPDEVMODE pDevMode = getDevmode(m_hPrinter, m_id)) {
+        // Get the default duplex mode
+        if (pDevMode->dmFields & DM_DUPLEX) {
+            if (pDevMode->dmDuplex == DMDUP_VERTICAL)
+                duplexMode = QPrint::DuplexLongSide;
+            else if (pDevMode->dmDuplex == DMDUP_HORIZONTAL)
+                duplexMode = QPrint::DuplexShortSide;
+        }
+        // Clean-up
+        free(pDevMode);
+    }
+    return duplexMode;
+}
+
+void QWindowsPrintDevice::loadColorModes() const
+{
+    m_colorModes.append(QPrint::GrayScale);
+    DWORD color = DeviceCapabilities(wcharId(), nullptr, DC_COLORDEVICE, nullptr, nullptr);
+    if (int(color) == 1)
+        m_colorModes.append(QPrint::Color);
+    m_haveColorModes = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveColorModes = true;
+    info[m_infoIndex].m_colorModes = m_colorModes;
+}
+
+QPrint::ColorMode QWindowsPrintDevice::defaultColorMode() const
+{
+    if (!m_haveColorModes)
+        loadColorModes();
+    if (!m_colorModes.contains(QPrint::Color))
+        return QPrint::GrayScale;
+
+    QPrint::ColorMode colorMode = QPrint::GrayScale;
+
+    if (LPDEVMODE pDevMode = getDevmode(m_hPrinter, m_id)) {
+        // Get the default color mode
+        if (pDevMode->dmFields & DM_COLOR && pDevMode->dmColor == DMCOLOR_COLOR)
+            colorMode = QPrint::Color;
+        // Clean-up
+        free(pDevMode);
+    }
+    return colorMode;
+}
+
+QStringList QWindowsPrintDevice::availablePrintDeviceIds()
+{
+    QStringList list;
+    DWORD needed = 0;
+    DWORD returned = 0;
+    if ((!EnumPrinters(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, NULL, 4, 0, 0, &needed, &returned) && GetLastError() != ERROR_INSUFFICIENT_BUFFER)
+        || !needed) {
+        return list;
+    }
+    QScopedArrayPointer<BYTE> buffer(new BYTE[needed]);
+    if (!EnumPrinters(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, NULL, 4, buffer.data(), needed, &needed, &returned))
+        return list;
+    PPRINTER_INFO_4 infoList = reinterpret_cast<PPRINTER_INFO_4>(buffer.data());
+    for (uint i = 0; i < returned; ++i)
+        list.append(QString::fromWCharArray(infoList[i].pPrinterName));
+    return list;
+}
+
+QString QWindowsPrintDevice::defaultPrintDeviceId()
+{
+    DWORD size = 0;
+    if (GetDefaultPrinter(NULL, &size) == ERROR_FILE_NOT_FOUND)
+       return QString();
+
+    QScopedArrayPointer<wchar_t> name(new wchar_t[size]);
+    GetDefaultPrinter(name.data(), &size);
+    return QString::fromWCharArray(name.data());
+}
+
+void QWindowsPrintDevice::loadCopiesSupport() const
+{
+    auto printerId = wcharId();
+    m_supportsMultipleCopies = (DeviceCapabilities(printerId, NULL, DC_COPIES, NULL, NULL) > 1);
+    m_supportsCollateCopies = DeviceCapabilities(printerId, NULL, DC_COLLATE, NULL, NULL);
+    m_haveCopies = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveCopies = true;
+    info[m_infoIndex].m_supportsMultipleCopies = m_supportsMultipleCopies;
+    info[m_infoIndex].m_supportsCollateCopies = m_supportsCollateCopies;
+}
+
+bool QWindowsPrintDevice::supportsCollateCopies() const
+{
+    if (!m_haveCopies)
+        loadCopiesSupport();
+    return m_supportsCollateCopies;
+}
+
+bool QWindowsPrintDevice::supportsMultipleCopies() const
+{
+    if (!m_haveCopies)
+        loadCopiesSupport();
+    return m_supportsMultipleCopies;
+}
+
+bool QWindowsPrintDevice::supportsCustomPageSizes() const
+{
+    if (!m_haveMinMaxPageSizes)
+        loadMinMaxPageSizes();
+    return m_supportsCustomPageSizes;
+}
+
+QSize QWindowsPrintDevice::minimumPhysicalPageSize() const
+{
+    if (!m_haveMinMaxPageSizes)
+        loadMinMaxPageSizes();
+    return m_minimumPhysicalPageSize;
+}
+
+QSize QWindowsPrintDevice::maximumPhysicalPageSize() const
+{
+    if (!m_haveMinMaxPageSizes)
+        loadMinMaxPageSizes();
+    return m_maximumPhysicalPageSize;
+}
+
+void QWindowsPrintDevice::loadMinMaxPageSizes() const
+{
+    // Min/Max custom size is in tenths of a millimeter
+    const qreal multiplier = qt_pointMultiplier(QPageLayout::Millimeter);
+    auto printerId = wcharId();
+    DWORD min = DeviceCapabilities(printerId, NULL, DC_MINEXTENT, NULL, NULL);
+    m_minimumPhysicalPageSize = QSize((LOWORD(min) / 10.0) * multiplier, (HIWORD(min) / 10.0) * multiplier);
+    DWORD max = DeviceCapabilities(printerId, NULL, DC_MAXEXTENT, NULL, NULL);
+    m_maximumPhysicalPageSize = QSize((LOWORD(max) / 10.0) * multiplier, (HIWORD(max) / 10.0) * multiplier);
+    m_supportsCustomPageSizes = (m_maximumPhysicalPageSize.width() > 0 && m_maximumPhysicalPageSize.height() > 0);
+    m_haveMinMaxPageSizes = true;
+    QWindowsPrinterInfo *info = windowsDeviceLookup()->data();
+    info[m_infoIndex].m_haveCopies = true;
+    info[m_infoIndex].m_supportsMultipleCopies = m_supportsMultipleCopies;
+    info[m_infoIndex].m_supportsCollateCopies = m_supportsCollateCopies;
+}
+
+QT_END_NAMESPACE
diff --git a/src/printsupport/platform/windows/qwindowsprintdevice_p.h b/src/printsupport/platform/windows/qwindowsprintdevice_p.h
new file mode 100644
index 0000000000..bbae4971b7
--- /dev/null
+++ b/src/printsupport/platform/windows/qwindowsprintdevice_p.h
@@ -0,0 +1,154 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 John Layt <jlayt@kde.org>
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWINDOWSPRINTDEVICE_H
+#define QWINDOWSPRINTDEVICE_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of internal files. This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qpa/qplatformprintdevice.h>
+
+#include <QtPrintSupport/qtprintsupportglobal.h>
+#include <QtCore/qt_windows.h>
+
+QT_BEGIN_NAMESPACE
+
+class Q_PRINTSUPPORT_EXPORT QWindowsPrinterInfo
+{
+public:
+    bool operator==(const QWindowsPrinterInfo &other) const
+    {
+        // We only need to check if these are the same for matching up
+        return m_id == other.m_id && m_name == other.m_name &&
+               m_location == other.m_location &&
+               m_makeAndModel == other.m_makeAndModel &&
+               m_isRemote == other.m_isRemote;
+    }
+    QString m_id;
+    QString m_name;
+    QString m_location;
+    QString m_makeAndModel;
+    QList<QPageSize> m_pageSizes;
+    QList<int> m_resolutions;
+    QList<QPrint::InputSlot> m_inputSlots;
+    QList<QPrint::OutputBin> m_outputBins;
+    QList<QPrint::DuplexMode> m_duplexModes;
+    QList<QPrint::ColorMode> m_colorModes;
+    QSize m_minimumPhysicalPageSize;
+    QSize m_maximumPhysicalPageSize;
+    bool m_isRemote = false;
+    bool m_havePageSizes = false;
+    bool m_haveResolutions = false;
+    bool m_haveCopies = false;
+    bool m_supportsMultipleCopies = false;
+    bool m_supportsCollateCopies = false;
+    bool m_haveMinMaxPageSizes = false;
+    bool m_supportsCustomPageSizes = false;
+    bool m_haveInputSlots = false;
+    bool m_haveOutputBins = false;
+    bool m_haveDuplexModes = false;
+    bool m_haveColorModes = false;
+};
+
+class Q_PRINTSUPPORT_EXPORT QWindowsPrintDevice : public QPlatformPrintDevice
+{
+public:
+    QWindowsPrintDevice();
+    explicit QWindowsPrintDevice(const QString &id);
+    virtual ~QWindowsPrintDevice();
+
+    bool isValid() const override;
+    bool isDefault() const override;
+
+    QPrint::DeviceState state() const override;
+
+    QPageSize defaultPageSize() const override;
+
+    QMarginsF printableMargins(const QPageSize &pageSize, QPageLayout::Orientation orientation,
+                               int resolution) const override;
+
+    int defaultResolution() const override;
+
+    QPrint::InputSlot defaultInputSlot() const override;
+
+    QPrint::DuplexMode defaultDuplexMode() const override;
+
+    QPrint::ColorMode defaultColorMode() const override;
+
+    static QStringList availablePrintDeviceIds();
+    static QString defaultPrintDeviceId();
+
+    bool supportsCollateCopies() const override;
+    bool supportsMultipleCopies() const override;
+    bool supportsCustomPageSizes() const override;
+    QSize minimumPhysicalPageSize() const override;
+    QSize maximumPhysicalPageSize() const override;
+
+protected:
+    void loadPageSizes() const override;
+    void loadResolutions() const override;
+    void loadInputSlots() const override;
+    void loadOutputBins() const override;
+    void loadDuplexModes() const override;
+    void loadColorModes() const override;
+    void loadCopiesSupport() const;
+    void loadMinMaxPageSizes() const;
+
+private:
+    LPCWSTR wcharId() const { return reinterpret_cast<LPCWSTR>(m_id.utf16()); }
+
+    HANDLE m_hPrinter;
+    mutable bool m_haveCopies;
+    mutable bool m_haveMinMaxPageSizes;
+    int m_infoIndex;
+};
+
+QT_END_NAMESPACE
+
+#endif // QWINDOWSPRINTDEVICE_H
diff --git a/src/printsupport/platform/windows/qwindowsprinterinfo.cpp b/src/printsupport/platform/windows/qwindowsprinterinfo.cpp
new file mode 100644
index 0000000000..e416dd7a21
--- /dev/null
+++ b/src/printsupport/platform/windows/qwindowsprinterinfo.cpp
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qprinterinfo.h"
+#include "qprinterinfo_p.h"
+
+#include <qstringlist.h>
+
+#include <qt_windows.h>
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_PRINTER
+
+extern QPrinter::PaperSize mapDevmodePaperSize(int s);
+
+//QList<QPrinterInfo> QPrinterInfo::availablePrinters()
+//{
+//    QList<QPrinterInfo> printers;
+
+//    DWORD needed = 0;
+//    DWORD returned = 0;
+//    if (!EnumPrinters(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, NULL, 4, 0, 0, &needed, &returned)) {
+//        LPBYTE buffer = new BYTE[needed];
+//        if (EnumPrinters(PRINTER_ENUM_LOCAL | PRINTER_ENUM_CONNECTIONS, NULL, 4, buffer, needed, &needed, &returned)) {
+//            PPRINTER_INFO_4 infoList = reinterpret_cast<PPRINTER_INFO_4>(buffer);
+//            QPrinterInfo defPrn = defaultPrinter();
+//            for (uint i = 0; i < returned; ++i) {
+//                QString printerName(QString::fromWCharArray(infoList[i].pPrinterName));
+
+//                QPrinterInfo printerInfo(printerName);
+//                if (printerInfo.printerName() == defPrn.printerName())
+//                    printerInfo.d_ptr->isDefault = true;
+//                printers.append(printerInfo);
+//            }
+//        }
+//        delete [] buffer;
+//    }
+
+//    return printers;
+//}
+
+//QPrinterInfo QPrinterInfo::defaultPrinter()
+//{
+//    QString noPrinters(QLatin1String("qt_no_printers"));
+//    wchar_t buffer[256];
+//    GetProfileString(L"windows", L"device", (wchar_t*)noPrinters.utf16(), buffer, 256);
+//    QString output = QString::fromWCharArray(buffer);
+//    if (output != noPrinters) {
+//        // Filter out the name of the printer, which should be everything before a comma.
+//        QString printerName = output.split(QLatin1Char(',')).value(0);
+//        QPrinterInfo printerInfo(printerName);
+//        printerInfo.d_ptr->isDefault = true;
+//        return printerInfo;
+//    }
+
+//    return QPrinterInfo();
+//}
+
+//QList<QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
+//{
+//    const Q_D(QPrinterInfo);
+
+//    QList<QPrinter::PaperSize> paperSizes;
+//    if (isNull())
+//        return paperSizes;
+
+//    DWORD size = DeviceCapabilities(reinterpret_cast<const wchar_t*>(d->name.utf16()),
+//                                    NULL, DC_PAPERS, NULL, NULL);
+//    if ((int)size != -1) {
+//        wchar_t *papers = new wchar_t[size];
+//        size = DeviceCapabilities(reinterpret_cast<const wchar_t*>(d->name.utf16()),
+//                                  NULL, DC_PAPERS, papers, NULL);
+//        for (int c = 0; c < (int)size; ++c)
+//            paperSizes.append(mapDevmodePaperSize(papers[c]));
+//        delete [] papers;
+//    }
+
+//    return paperSizes;
+//}
+
+#endif // QT_NO_PRINTER
+
+QT_END_NAMESPACE
diff --git a/src/printsupport/platform/windows/qwindowsprintersupport.cpp b/src/printsupport/platform/windows/qwindowsprintersupport.cpp
new file mode 100644
index 0000000000..6fd5aef47f
--- /dev/null
+++ b/src/printsupport/platform/windows/qwindowsprintersupport.cpp
@@ -0,0 +1,112 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qwindowsprintersupport_p.h"
+
+#ifndef QT_NO_PRINTER
+
+#include "qwindowsprintdevice_p.h"
+
+#include <QtCore/QStringList>
+#include <private/qprintengine_win_p.h>
+#include <private/qprintdevice_p.h>
+
+#define QT_STATICPLUGIN
+#include <qpa/qplatformprintplugin.h>
+
+QT_BEGIN_NAMESPACE
+
+QWindowsPrinterSupport::QWindowsPrinterSupport()
+    : QPlatformPrinterSupport()
+{
+}
+
+QWindowsPrinterSupport::~QWindowsPrinterSupport()
+{
+}
+
+QPrintEngine *QWindowsPrinterSupport::createNativePrintEngine(QPrinter::PrinterMode printerMode, const QString &deviceId)
+{
+    return new QWin32PrintEngine(printerMode, deviceId);
+}
+
+QPaintEngine *QWindowsPrinterSupport::createPaintEngine(QPrintEngine *engine, QPrinter::PrinterMode printerMode)
+{
+    Q_UNUSED(printerMode);
+    return static_cast<QWin32PrintEngine *>(engine);
+}
+
+QPrintDevice QWindowsPrinterSupport::createPrintDevice(const QString &id)
+{
+    return QPlatformPrinterSupport::createPrintDevice(new QWindowsPrintDevice(id));
+}
+
+QStringList QWindowsPrinterSupport::availablePrintDeviceIds() const
+{
+    return QWindowsPrintDevice::availablePrintDeviceIds();
+}
+
+QString QWindowsPrinterSupport::defaultPrintDeviceId() const
+{
+    return QWindowsPrintDevice::defaultPrintDeviceId();
+}
+
+class QWindowsPrinterSupportPlugin : public QPlatformPrinterSupportPlugin
+{
+    Q_OBJECT
+    Q_PLUGIN_METADATA(IID QPlatformPrinterSupportFactoryInterface_iid FILE "windows.json")
+
+public:
+    QPlatformPrinterSupport *create(const QString &);
+};
+
+QPlatformPrinterSupport *QWindowsPrinterSupportPlugin::create(const QString &key)
+{
+    if (key.compare(key, QLatin1String("windowsprintsupport"), Qt::CaseInsensitive) == 0)
+        return new QWindowsPrinterSupport;
+    return nullptr;
+}
+
+Q_IMPORT_PLUGIN(QWindowsPrinterSupportPlugin)
+
+#include "qwindowsprintersupport.moc"
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PRINTER
diff --git a/src/printsupport/platform/windows/qwindowsprintersupport_p.h b/src/printsupport/platform/windows/qwindowsprintersupport_p.h
new file mode 100644
index 0000000000..a43fdb8d0a
--- /dev/null
+++ b/src/printsupport/platform/windows/qwindowsprintersupport_p.h
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtPrintSupport module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WINDOWSPRINTERSUPPORT_H
+#define WINDOWSPRINTERSUPPORT_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists for the convenience
+// of internal files. This header file may change from version to version
+// without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtPrintSupport/qtprintsupportglobal.h>
+
+#include <qpa/qplatformprintersupport.h>
+#ifndef QT_NO_PRINTER
+
+QT_BEGIN_NAMESPACE
+
+class Q_PRINTSUPPORT_EXPORT QWindowsPrinterSupport : public QPlatformPrinterSupport
+{
+    Q_DISABLE_COPY_MOVE(QWindowsPrinterSupport)
+public:
+    QWindowsPrinterSupport();
+    ~QWindowsPrinterSupport() override;
+
+    QPrintEngine *createNativePrintEngine(QPrinter::PrinterMode printerMode, const QString &deviceId = QString()) override;
+    QPaintEngine *createPaintEngine(QPrintEngine *printEngine, QPrinter::PrinterMode) override;
+
+    QPrintDevice createPrintDevice(const QString &id) override;
+    QStringList availablePrintDeviceIds() const override;
+    QString defaultPrintDeviceId() const override;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PRINTER
+#endif // WINDOWSPRINTERSUPPORT_H
diff --git a/src/printsupport/platform/windows/windows.json b/src/printsupport/platform/windows/windows.json
new file mode 100644
index 0000000000..803052854e
--- /dev/null
+++ b/src/printsupport/platform/windows/windows.json
@@ -0,0 +1,3 @@
+{
+    "Keys": [ "windowsprintsupport" ]
+}
diff --git a/src/printsupport/platform/windows/windows.pri b/src/printsupport/platform/windows/windows.pri
new file mode 100644
index 0000000000..89d765dc28
--- /dev/null
+++ b/src/printsupport/platform/windows/windows.pri
@@ -0,0 +1,16 @@
+SOURCES += \
+    $$PWD/qprintengine_win.cpp \
+    $$PWD/qwindowsprintdevice.cpp
+
+# Disable PCH to allow selectively enabling QT_STATICPLUGIN
+NO_PCH_SOURCES += $$PWD/qwindowsprintersupport.cpp
+
+HEADERS += \
+    $$PWD/qprintengine_win_p.h \
+    $$PWD/qwindowsprintersupport_p.h \
+    $$PWD/qwindowsprintdevice_p.h
+
+OTHER_FILES += $$PWD/windows.json
+
+LIBS += -lwinspool -lcomdlg32
+QMAKE_USE_PRIVATE += user32 gdi32
diff --git a/src/printsupport/printsupport.pro b/src/printsupport/printsupport.pro
index e64fbb634c..53bdccb3a3 100644
--- a/src/printsupport/printsupport.pro
+++ b/src/printsupport/printsupport.pro
@@ -12,6 +12,7 @@ include(widgets/widgets.pri)
 include(dialogs/dialogs.pri)
 
 macos: include(platform/macos/macos.pri)
+win32: include(platform/windows/windows.pri)
 
 MODULE_PLUGIN_TYPES = \
     printsupport