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diff --git a/src/gui/painting/qprinterinfo.cpp b/src/gui/painting/qprinterinfo.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Free Documentation License
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of this
+** file.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qprinterinfo.h"
+#include "qprinterinfo_p.h"
+
+#ifndef QT_NO_PRINTER
+
+QT_BEGIN_NAMESPACE
+
+QPrinterInfoPrivate QPrinterInfoPrivate::shared_null;
+
+
+/*!
+    \class QPrinterInfo
+
+    \brief The QPrinterInfo class gives access to information about
+    existing printers.
+    
+    \ingroup printing
+
+    Use the static functions to generate a list of QPrinterInfo
+    objects. Each QPrinterInfo object in the list represents a single
+    printer and can be queried for name, supported paper sizes, and
+    whether or not it is the default printer.
+
+    \since 4.4
+*/
+
+/*!
+    \fn QList<QPrinterInfo> QPrinterInfo::availablePrinters()
+
+    Returns a list of available printers on the system.
+*/
+
+/*!
+    \fn QPrinterInfo QPrinterInfo::defaultPrinter()
+
+    Returns the default printer on the system.
+
+    The return value should be checked using isNull() before being
+    used, in case there is no default printer.
+
+    \sa isNull()
+*/
+
+/*!
+    Constructs an empty QPrinterInfo object.
+
+    \sa isNull()
+*/
+QPrinterInfo::QPrinterInfo()
+    : d_ptr(&QPrinterInfoPrivate::shared_null)
+{
+}
+
+/*!
+    Constructs a copy of \a other.
+*/
+QPrinterInfo::QPrinterInfo(const QPrinterInfo &other)
+    : d_ptr(new QPrinterInfoPrivate(*other.d_ptr))
+{
+}
+
+/*!
+    Constructs a QPrinterInfo object from \a printer.
+*/
+QPrinterInfo::QPrinterInfo(const QPrinter &printer)
+    : d_ptr(&QPrinterInfoPrivate::shared_null)
+{
+    foreach (const QPrinterInfo &printerInfo, availablePrinters()) {
+        if (printerInfo.printerName() == printer.printerName()) {
+            d_ptr.reset(new QPrinterInfoPrivate(*printerInfo.d_ptr));
+            break;
+        }
+    }
+}
+
+/*!
+    \internal
+*/
+QPrinterInfo::QPrinterInfo(const QString &name)
+    : d_ptr(new QPrinterInfoPrivate(name))
+{
+}
+
+/*!
+    Destroys the QPrinterInfo object. References to the values in the
+    object become invalid.
+*/
+QPrinterInfo::~QPrinterInfo()
+{
+}
+
+/*!
+    Sets the QPrinterInfo object to be equal to \a other.
+*/
+QPrinterInfo &QPrinterInfo::operator=(const QPrinterInfo &other)
+{
+    Q_ASSERT(d_ptr);
+    d_ptr.reset(new QPrinterInfoPrivate(*other.d_ptr));
+    return *this;
+}
+
+/*!
+    Returns the name of the printer.
+
+    \sa QPrinter::setPrinterName()
+*/
+QString QPrinterInfo::printerName() const
+{
+    const Q_D(QPrinterInfo);
+    return d->name;
+}
+
+/*!
+    Returns whether this QPrinterInfo object holds a printer definition.
+
+    An empty QPrinterInfo object could result for example from calling
+    defaultPrinter() when there are no printers on the system.
+*/
+bool QPrinterInfo::isNull() const
+{
+    const Q_D(QPrinterInfo);
+    return d == &QPrinterInfoPrivate::shared_null;
+}
+
+/*!
+    Returns whether this printer is the default printer.
+*/
+bool QPrinterInfo::isDefault() const
+{
+    const Q_D(QPrinterInfo);
+    return d->isDefault;
+}
+
+/*!
+    \fn QList< QPrinter::PaperSize> QPrinterInfo::supportedPaperSizes() const
+    \since 4.4
+
+    Returns a list of supported paper sizes by the printer.
+
+    Not all printer drivers support this query, so the list may be empty.
+    On Mac OS X 10.3, this function always returns an empty list.
+*/
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PRINTER