Long live Qt 4.5!

14 files changed, 3647 insertions, 0 deletions

diff --git a/src/corelib/plugin/plugin.pri b/src/corelib/plugin/plugin.pri
new file mode 100644
index 0000000000..aaecec9de6
--- /dev/null
+++ b/src/corelib/plugin/plugin.pri
@@ -0,0 +1,24 @@
+# Qt core library plugin module
+
+HEADERS += \
+	plugin/qfactoryinterface.h \
+	plugin/qpluginloader.h \
+	plugin/qlibrary.h \
+	plugin/qlibrary_p.h \
+	plugin/qplugin.h \
+	plugin/quuid.h \
+	plugin/qfactoryloader_p.h 
+
+SOURCES += \
+	plugin/qpluginloader.cpp \
+	plugin/qfactoryloader.cpp \
+	plugin/quuid.cpp \
+	plugin/qlibrary.cpp
+
+win32 {
+	SOURCES += plugin/qlibrary_win.cpp
+}
+
+unix {
+	SOURCES += plugin/qlibrary_unix.cpp
+}
diff --git a/src/corelib/plugin/qfactoryinterface.h b/src/corelib/plugin/qfactoryinterface.h
new file mode 100644
index 0000000000..ee00d8f061
--- /dev/null
+++ b/src/corelib/plugin/qfactoryinterface.h
@@ -0,0 +1,67 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFACTORYINTERFACE_H
+#define QFACTORYINTERFACE_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qstringlist.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+struct Q_CORE_EXPORT QFactoryInterface
+{
+    virtual ~QFactoryInterface() {}
+    virtual QStringList keys() const = 0;
+};
+
+
+Q_DECLARE_INTERFACE(QFactoryInterface, "com.trolltech.Qt.QFactoryInterface")
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QFACTORYINTERFACE_H
diff --git a/src/corelib/plugin/qfactoryloader.cpp b/src/corelib/plugin/qfactoryloader.cpp
new file mode 100644
index 0000000000..516302778c
--- /dev/null
+++ b/src/corelib/plugin/qfactoryloader.cpp
@@ -0,0 +1,256 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qfactoryloader_p.h"
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+#include "qfactoryinterface.h"
+#include "qmap.h"
+#include <qdir.h>
+#include <qsettings.h>
+#include <qdebug.h>
+#include "qmutex.h"
+#include "qplugin.h"
+#include "qpluginloader.h"
+#include "private/qobject_p.h"
+#include "private/qcoreapplication_p.h"
+
+QT_BEGIN_NAMESPACE
+
+Q_GLOBAL_STATIC(QList<QFactoryLoader *>, qt_factory_loaders);
+
+Q_GLOBAL_STATIC_WITH_ARGS(QMutex, qt_factoryloader_mutex, (QMutex::Recursive))
+
+class QFactoryLoaderPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QFactoryLoader)
+public:
+    QFactoryLoaderPrivate(){}
+    mutable QMutex mutex;
+    QByteArray iid;
+    QList<QLibraryPrivate*> libraryList;
+    QMap<QString,QLibraryPrivate*> keyMap;
+    QStringList keyList;
+    QString suffix;
+    Qt::CaseSensitivity cs;
+    QStringList loadedPaths;
+
+    void unloadPath(const QString &path);
+};
+
+QFactoryLoader::QFactoryLoader(const char *iid,
+                               const QString &suffix,
+                               Qt::CaseSensitivity cs)
+    : QObject(*new QFactoryLoaderPrivate)
+{
+    moveToThread(QCoreApplicationPrivate::mainThread());
+    Q_D(QFactoryLoader);
+    d->iid = iid;
+    d->cs = cs;
+    d->suffix = suffix;
+
+
+    QMutexLocker locker(qt_factoryloader_mutex());
+    qt_factory_loaders()->append(this);
+    update();
+}
+
+
+
+void QFactoryLoader::update()
+{
+#ifdef QT_SHARED
+    Q_D(QFactoryLoader);
+    QStringList paths = QCoreApplication::libraryPaths();
+    QSettings settings(QSettings::UserScope, QLatin1String("Trolltech"));
+    for (int i = 0; i < paths.count(); ++i) {
+        const QString &pluginDir = paths.at(i);
+        // Already loaded, skip it...
+        if (d->loadedPaths.contains(pluginDir))
+            continue;
+        d->loadedPaths << pluginDir;
+
+        QString path = pluginDir + d->suffix;
+        if (!QDir(path).exists(QLatin1String(".")))
+            continue;
+
+        QStringList plugins = QDir(path).entryList(QDir::Files);
+        QLibraryPrivate *library = 0;
+        for (int j = 0; j < plugins.count(); ++j) {
+            QString fileName = QDir::cleanPath(path + QLatin1Char('/') + plugins.at(j));
+            if (qt_debug_component()) {
+                qDebug() << "QFactoryLoader::QFactoryLoader() looking at" << fileName;
+            }
+            library = QLibraryPrivate::findOrCreate(QFileInfo(fileName).canonicalFilePath());
+            if (!library->isPlugin(&settings)) {
+                if (qt_debug_component()) {
+                    qDebug() << library->errorString;
+                    qDebug() << "         not a plugin";
+                }
+                library->release();
+                continue;
+            }
+            QString regkey = QString::fromLatin1("Qt Factory Cache %1.%2/%3:/%4")
+                             .arg((QT_VERSION & 0xff0000) >> 16)
+                             .arg((QT_VERSION & 0xff00) >> 8)
+                             .arg(QLatin1String(d->iid))
+                             .arg(fileName);
+            QStringList reg, keys;
+            reg = settings.value(regkey).toStringList();
+            if (reg.count() && library->lastModified == reg[0]) {
+                keys = reg;
+                keys.removeFirst();
+            } else {
+                if (!library->loadPlugin()) {
+                    if (qt_debug_component()) {
+                        qDebug() << library->errorString;
+                        qDebug() << "           could not load";
+                    }
+                    library->release();
+                    continue;
+                }
+                QObject *instance = library->instance();
+                if (!instance)
+                    // ignore plugins that have a valid signature but cannot be loaded.
+                    continue;
+                QFactoryInterface *factory = qobject_cast<QFactoryInterface*>(instance);
+                if (instance && factory && instance->qt_metacast(d->iid))
+                    keys = factory->keys();
+                if (keys.isEmpty())
+                    library->unload();
+                reg.clear();
+                reg << library->lastModified;
+                reg += keys;
+                settings.setValue(regkey, reg);
+            }
+            if (qt_debug_component()) {
+                qDebug() << "keys" << keys;
+            }
+
+            if (keys.isEmpty()) {
+                library->release();
+                continue;
+            }
+            d->libraryList += library;
+            for (int k = 0; k < keys.count(); ++k) {
+                // first come first serve, unless the first
+                // library was built with a future Qt version,
+                // whereas the new one has a Qt version that fits
+                // better
+                QString key = keys.at(k);
+                if (!d->cs)
+                    key = key.toLower();
+                QLibraryPrivate *previous = d->keyMap.value(key);
+                if (!previous || (previous->qt_version > QT_VERSION && library->qt_version <= QT_VERSION)) {
+                    d->keyMap[key] = library;
+                    d->keyList += keys.at(k);
+                }
+            }
+        }
+    }
+#else
+    Q_D(QFactoryLoader);
+    if (qt_debug_component()) {
+        qDebug() << "QFactoryLoader::QFactoryLoader() ignoring" << d->iid
+                 << "since plugins are disabled in static builds";
+    }
+#endif
+}
+
+QFactoryLoader::~QFactoryLoader()
+{
+    Q_D(QFactoryLoader);
+    for (int i = 0; i < d->libraryList.count(); ++i)
+        d->libraryList.at(i)->release();
+
+    QMutexLocker locker(qt_factoryloader_mutex());
+    qt_factory_loaders()->removeAll(this);
+}
+
+QStringList QFactoryLoader::keys() const
+{
+    Q_D(const QFactoryLoader);
+    QMutexLocker locker(&d->mutex);
+    QStringList keys = d->keyList;
+    QObjectList instances = QPluginLoader::staticInstances();
+    for (int i = 0; i < instances.count(); ++i)
+        if (QFactoryInterface *factory = qobject_cast<QFactoryInterface*>(instances.at(i)))
+            if (instances.at(i)->qt_metacast(d->iid))
+                keys += factory->keys();
+    return keys;
+}
+
+QObject *QFactoryLoader::instance(const QString &key) const
+{
+    Q_D(const QFactoryLoader);
+    QMutexLocker locker(&d->mutex);
+    QObjectList instances = QPluginLoader::staticInstances();
+    for (int i = 0; i < instances.count(); ++i)
+        if (QFactoryInterface *factory = qobject_cast<QFactoryInterface*>(instances.at(i)))
+            if (instances.at(i)->qt_metacast(d->iid) && factory->keys().contains(key, Qt::CaseInsensitive))
+                return instances.at(i);
+
+    QString lowered = d->cs ? key : key.toLower();
+    if (QLibraryPrivate* library = d->keyMap.value(lowered)) {
+        if (library->instance || library->loadPlugin()) {
+            if (QObject *obj = library->instance()) {
+                if (obj && !obj->parent())
+                    obj->moveToThread(QCoreApplicationPrivate::mainThread());
+                return obj;
+            }
+        }
+    }
+    return 0;
+}
+
+void QFactoryLoader::refreshAll()
+{
+    QMutexLocker locker(qt_factoryloader_mutex());
+    QList<QFactoryLoader *> *loaders = qt_factory_loaders();
+    for (QList<QFactoryLoader *>::const_iterator it = loaders->constBegin();
+         it != loaders->constEnd(); ++it) {
+        (*it)->update();
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
diff --git a/src/corelib/plugin/qfactoryloader_p.h b/src/corelib/plugin/qfactoryloader_p.h
new file mode 100644
index 0000000000..8110a60cfe
--- /dev/null
+++ b/src/corelib/plugin/qfactoryloader_p.h
@@ -0,0 +1,89 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QFACTORYLOADER_P_H
+#define QFACTORYLOADER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtCore/qobject.h"
+#include "QtCore/qstringlist.h"
+#include "private/qlibrary_p.h"
+
+#if !defined (QT_NO_LIBRARY) && !defined(QT_NO_SETTINGS)
+
+QT_BEGIN_NAMESPACE
+
+class QFactoryLoaderPrivate;
+
+class Q_CORE_EXPORT QFactoryLoader : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QFactoryLoader)
+
+public:
+    QFactoryLoader(const char *iid,
+                   const QString &suffix = QString(),
+                   Qt::CaseSensitivity = Qt::CaseSensitive);
+    ~QFactoryLoader();
+
+    QStringList keys() const;
+    QObject *instance(const QString &key) const;
+
+    void update();
+
+    static void refreshAll();
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
+
+#endif // QFACTORYLOADER_P_H
diff --git a/src/corelib/plugin/qlibrary.cpp b/src/corelib/plugin/qlibrary.cpp
new file mode 100644
index 0000000000..79400a8396
--- /dev/null
+++ b/src/corelib/plugin/qlibrary.cpp
@@ -0,0 +1,1130 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+#include "qlibrary.h"
+
+#ifndef QT_NO_LIBRARY
+
+#include "qlibrary_p.h"
+#include <qstringlist.h>
+#include <qfile.h>
+#include <qfileinfo.h>
+#include <qmutex.h>
+#include <qmap.h>
+#include <qsettings.h>
+#include <qdatetime.h>
+#ifdef Q_OS_MAC
+#  include <private/qcore_mac_p.h>
+#endif
+#ifndef NO_ERRNO_H
+#include <errno.h>
+#endif // NO_ERROR_H
+#include <qdebug.h>
+#include <qvector.h>
+#include <qdir.h>
+
+QT_BEGIN_NAMESPACE
+
+//#define QT_DEBUG_COMPONENT
+
+#ifdef QT_NO_DEBUG
+#  define QLIBRARY_AS_DEBUG false
+#else
+#  define QLIBRARY_AS_DEBUG true
+#endif
+
+#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
+// We don't use separate debug and release libs on UNIX, so we want
+// to allow loading plugins, regardless of how they were built.
+#  define QT_NO_DEBUG_PLUGIN_CHECK
+#endif
+
+Q_GLOBAL_STATIC(QMutex, qt_library_mutex)
+
+/*!
+    \class QLibrary
+    \reentrant
+    \brief The QLibrary class loads shared libraries at runtime.
+
+    \mainclass
+    \ingroup plugins
+
+    An instance of a QLibrary object operates on a single shared
+    object file (which we call a "library", but is also known as a
+    "DLL"). A QLibrary provides access to the functionality in the
+    library in a platform independent way. You can either pass a file
+    name in the constructor, or set it explicitly with setFileName().
+    When loading the library, QLibrary searches in all the
+    system-specific library locations (e.g. \c LD_LIBRARY_PATH on
+    Unix), unless the file name has an absolute path. If the file
+    cannot be found, QLibrary tries the name with different
+    platform-specific file suffixes, like ".so" on Unix, ".dylib" on
+    the Mac, or ".dll" on Windows. This makes it possible to specify
+    shared libraries that are only identified by their basename (i.e.
+    without their suffix), so the same code will work on different
+    operating systems.
+
+    The most important functions are load() to dynamically load the
+    library file, isLoaded() to check whether loading was successful,
+    and resolve() to resolve a symbol in the library. The resolve()
+    function implicitly tries to load the library if it has not been
+    loaded yet. Multiple instances of QLibrary can be used to access
+    the same physical library. Once loaded, libraries remain in memory
+    until the application terminates. You can attempt to unload a
+    library using unload(), but if other instances of QLibrary are
+    using the same library, the call will fail, and unloading will
+    only happen when every instance has called unload().
+
+    A typical use of QLibrary is to resolve an exported symbol in a
+    library, and to call the C function that this symbol represents.
+    This is called "explicit linking" in contrast to "implicit
+    linking", which is done by the link step in the build process when
+    linking an executable against a library.
+
+    The following code snippet loads a library, resolves the symbol
+    "mysymbol", and calls the function if everything succeeded. If
+    something goes wrong, e.g. the library file does not exist or the
+    symbol is not defined, the function pointer will be 0 and won't be
+    called.
+
+    \snippet doc/src/snippets/code/src_corelib_plugin_qlibrary.cpp 0
+
+    The symbol must be exported as a C function from the library for
+    resolve() to work. This means that the function must be wrapped in
+    an \c{extern "C"} block if the library is compiled with a C++
+    compiler. On Windows, this also requires the use of a \c dllexport
+    macro; see resolve() for the details of how this is done. For
+    convenience, there is a static resolve() function which you can
+    use if you just want to call a function in a library without
+    explicitly loading the library first:
+
+    \snippet doc/src/snippets/code/src_corelib_plugin_qlibrary.cpp 1
+
+    \sa QPluginLoader
+*/
+
+/*!
+    \enum QLibrary::LoadHint
+
+    This enum describes the possible hints that can be used to change the way
+    libraries are handled when they are loaded. These values indicate how
+    symbols are resolved when libraries are loaded, and are specified using
+    the setLoadHints() function.
+
+    \value ResolveAllSymbolsHint
+    Causes all symbols in a library to be resolved when it is loaded, not
+    simply when resolve() is called.
+    \value ExportExternalSymbolsHint
+    Exports unresolved and external symbols in the library so that they can be
+    resolved in other dynamically-loaded libraries loaded later.
+    \value LoadArchiveMemberHint
+    Allows the file name of the library to specify a particular object file
+    within an archive file.
+    If this hint is given, the filename of the library consists of
+    a path, which is a reference to an archive file, followed by
+    a reference to the archive member.
+
+    \sa loadHints
+*/
+
+
+#ifndef QT_NO_PLUGIN_CHECK
+struct qt_token_info
+{
+    qt_token_info(const char *f, const ulong fc)
+        : fields(f), field_count(fc), results(fc), lengths(fc)
+    {
+        results.fill(0);
+        lengths.fill(0);
+    }
+
+    const char *fields;
+    const ulong field_count;
+
+    QVector<const char *> results;
+    QVector<ulong> lengths;
+};
+
+/*
+  return values:
+       1 parse ok
+       0 eos
+      -1 parse error
+*/
+static int qt_tokenize(const char *s, ulong s_len, ulong *advance,
+                        qt_token_info &token_info)
+{
+    ulong pos = 0, field = 0, fieldlen = 0;
+    char current;
+    int ret = -1;
+    *advance = 0;
+    for (;;) {
+        current = s[pos];
+
+        // next char
+        ++pos;
+        ++fieldlen;
+        ++*advance;
+
+        if (! current || pos == s_len + 1) {
+            // save result
+            token_info.results[(int)field] = s;
+            token_info.lengths[(int)field] = fieldlen - 1;
+
+            // end of string
+            ret = 0;
+            break;
+        }
+
+        if (current == token_info.fields[field]) {
+            // save result
+            token_info.results[(int)field] = s;
+            token_info.lengths[(int)field] = fieldlen - 1;
+
+            // end of field
+            fieldlen = 0;
+            ++field;
+            if (field == token_info.field_count - 1) {
+                // parse ok
+                ret = 1;
+            }
+            if (field == token_info.field_count) {
+                // done parsing
+                break;
+            }
+
+            // reset string and its length
+            s = s + pos;
+            s_len -= pos;
+            pos = 0;
+        }
+    }
+
+    return ret;
+}
+
+/*
+  returns true if the string s was correctly parsed, false otherwise.
+*/
+static bool qt_parse_pattern(const char *s, uint *version, bool *debug, QByteArray *key)
+{
+    bool ret = true;
+
+    qt_token_info pinfo("=\n", 2);
+    int parse;
+    ulong at = 0, advance, parselen = qstrlen(s);
+    do {
+        parse = qt_tokenize(s + at, parselen, &advance, pinfo);
+        if (parse == -1) {
+            ret = false;
+            break;
+        }
+
+        at += advance;
+        parselen -= advance;
+
+        if (qstrncmp("version", pinfo.results[0], pinfo.lengths[0]) == 0) {
+            // parse version string
+            qt_token_info pinfo2("..-", 3);
+            if (qt_tokenize(pinfo.results[1], pinfo.lengths[1],
+                              &advance, pinfo2) != -1) {
+                QByteArray m(pinfo2.results[0], pinfo2.lengths[0]);
+                QByteArray n(pinfo2.results[1], pinfo2.lengths[1]);
+                QByteArray p(pinfo2.results[2], pinfo2.lengths[2]);
+                *version  = (m.toUInt() << 16) | (n.toUInt() << 8) | p.toUInt();
+            } else {
+                ret = false;
+                break;
+            }
+        } else if (qstrncmp("debug", pinfo.results[0], pinfo.lengths[0]) == 0) {
+            *debug = qstrncmp("true", pinfo.results[1], pinfo.lengths[1]) == 0;
+        } else if (qstrncmp("buildkey", pinfo.results[0],
+                              pinfo.lengths[0]) == 0){
+            // save buildkey
+            *key = QByteArray(pinfo.results[1], pinfo.lengths[1]);
+        }
+    } while (parse == 1 && parselen > 0);
+
+    return ret;
+}
+#endif // QT_NO_PLUGIN_CHECK
+
+#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC) && !defined(QT_NO_PLUGIN_CHECK)
+
+#if defined(Q_OS_FREEBSD) || defined(Q_OS_LINUX)
+#  define USE_MMAP
+QT_BEGIN_INCLUDE_NAMESPACE
+#  include <sys/types.h>
+#  include <sys/mman.h>
+QT_END_INCLUDE_NAMESPACE
+#endif // Q_OS_FREEBSD || Q_OS_LINUX
+
+static long qt_find_pattern(const char *s, ulong s_len,
+                             const char *pattern, ulong p_len)
+{
+    /*
+      we search from the end of the file because on the supported
+      systems, the read-only data/text segments are placed at the end
+      of the file.  HOWEVER, when building with debugging enabled, all
+      the debug symbols are placed AFTER the data/text segments.
+
+      what does this mean?  when building in release mode, the search
+      is fast because the data we are looking for is at the end of the
+      file... when building in debug mode, the search is slower
+      because we have to skip over all the debugging symbols first
+    */
+
+    if (! s || ! pattern || p_len > s_len) return -1;
+    ulong i, hs = 0, hp = 0, delta = s_len - p_len;
+
+    for (i = 0; i < p_len; ++i) {
+        hs += s[delta + i];
+        hp += pattern[i];
+    }
+    i = delta;
+    for (;;) {
+        if (hs == hp && qstrncmp(s + i, pattern, p_len) == 0)
+            return i;
+        if (i == 0)
+            break;
+        --i;
+        hs -= s[i + p_len];
+        hs += s[i];
+    }
+
+    return -1;
+}
+
+/*
+  This opens the specified library, mmaps it into memory, and searches
+  for the QT_PLUGIN_VERIFICATION_DATA.  The advantage of this approach is that
+  we can get the verification data without have to actually load the library.
+  This lets us detect mismatches more safely.
+
+  Returns false if version/key information is not present, or if the
+                information could not be read.
+  Returns  true if version/key information is present and successfully read.
+*/
+static bool qt_unix_query(const QString &library, uint *version, bool *debug, QByteArray *key, QLibraryPrivate *lib = 0)
+{
+    QFile file(library);
+    if (!file.open(QIODevice::ReadOnly)) {
+        if (lib)
+            lib->errorString = file.errorString();
+        if (qt_debug_component()) {
+            qWarning("%s: %s", (const char*) QFile::encodeName(library),
+                qPrintable(qt_error_string(errno)));
+        }
+        return false;
+    }
+
+    QByteArray data;
+    char *filedata = 0;
+    ulong fdlen = 0;
+
+#ifdef USE_MMAP
+    char *mapaddr = 0;
+    size_t maplen = file.size();
+    mapaddr = (char *) mmap(mapaddr, maplen, PROT_READ, MAP_PRIVATE, file.handle(), 0);
+    if (mapaddr != MAP_FAILED) {
+        // mmap succeeded
+        filedata = mapaddr;
+        fdlen = maplen;
+    } else {
+        // mmap failed
+        if (qt_debug_component()) {
+            qWarning("mmap: %s", qPrintable(qt_error_string(errno)));
+        }
+        if (lib)
+            lib->errorString = QLibrary::tr("Could not mmap '%1': %2")
+                .arg(library)
+                .arg(qt_error_string());
+#endif // USE_MMAP
+        // try reading the data into memory instead
+        data = file.readAll();
+        filedata = data.data();
+        fdlen = data.size();
+#ifdef USE_MMAP
+    }
+#endif // USE_MMAP
+
+    // verify that the pattern is present in the plugin
+    const char pattern[] = "pattern=QT_PLUGIN_VERIFICATION_DATA";
+    const ulong plen = qstrlen(pattern);
+    long pos = qt_find_pattern(filedata, fdlen, pattern, plen);
+
+    bool ret = false;
+    if (pos >= 0)
+        ret = qt_parse_pattern(filedata + pos, version, debug, key);
+
+    if (!ret && lib)
+        lib->errorString = QLibrary::tr("Plugin verification data mismatch in '%1'").arg(library);
+#ifdef USE_MMAP
+    if (mapaddr != MAP_FAILED && munmap(mapaddr, maplen) != 0) {
+        if (qt_debug_component())
+            qWarning("munmap: %s", qPrintable(qt_error_string(errno)));
+        if (lib)
+            lib->errorString = QLibrary::tr("Could not unmap '%1': %2")
+                .arg(library)
+                .arg( qt_error_string() );
+    }
+#endif // USE_MMAP
+
+    file.close();
+    return ret;
+}
+
+#endif // Q_OS_UNIX && !Q_OS_MAC && !defined(QT_NO_PLUGIN_CHECK)
+
+typedef QMap<QString, QLibraryPrivate*> LibraryMap;
+Q_GLOBAL_STATIC(LibraryMap, libraryMap)
+
+QLibraryPrivate::QLibraryPrivate(const QString &canonicalFileName, const QString &version)
+    :pHnd(0), fileName(canonicalFileName), fullVersion(version), instance(0), qt_version(0),
+     libraryRefCount(1), libraryUnloadCount(0), pluginState(MightBeAPlugin)
+{ libraryMap()->insert(canonicalFileName, this); }
+
+QLibraryPrivate *QLibraryPrivate::findOrCreate(const QString &fileName, const QString &version)
+{
+    QMutexLocker locker(qt_library_mutex());
+    if (QLibraryPrivate *lib = libraryMap()->value(fileName)) {
+        lib->libraryRefCount.ref();
+        return lib;
+    }
+
+    return new QLibraryPrivate(fileName, version);
+}
+
+QLibraryPrivate::~QLibraryPrivate()
+{
+    LibraryMap * const map = libraryMap();
+    if (map) {
+        QLibraryPrivate *that = map->take(fileName);
+        Q_ASSERT(this == that);
+	Q_UNUSED(that);
+    }
+}
+
+void *QLibraryPrivate::resolve(const char *symbol)
+{
+    if (!pHnd)
+        return 0;
+    return resolve_sys(symbol);
+}
+
+
+bool QLibraryPrivate::load()
+{
+    libraryUnloadCount.ref();
+    if (pHnd)
+        return true;
+    if (fileName.isEmpty())
+        return false;
+    return load_sys();
+}
+
+bool QLibraryPrivate::unload()
+{
+    if (!pHnd)
+        return false;
+    if (!libraryUnloadCount.deref()) { // only unload if ALL QLibrary instance wanted to
+        if (instance)
+            delete instance();
+        if  (unload_sys()) {
+            instance = 0;
+            pHnd = 0;
+        }
+    }
+
+    return (pHnd == 0);
+}
+
+void QLibraryPrivate::release()
+{
+    QMutexLocker locker(qt_library_mutex());
+    if (!libraryRefCount.deref())
+        delete this;
+}
+
+bool QLibraryPrivate::loadPlugin()
+{
+    if (instance) {
+        libraryUnloadCount.ref();
+        return true;
+    }
+    if (load()) {
+        instance = (QtPluginInstanceFunction)resolve("qt_plugin_instance");
+        return instance;
+    }
+    return false;
+}
+
+/*!
+    Returns true if \a fileName has a valid suffix for a loadable
+    library; otherwise returns false.
+
+    \table
+    \header \i Platform \i Valid suffixes
+    \row \i Windows     \i \c .dll
+    \row \i Unix/Linux  \i \c .so
+    \row \i AIX  \i \c .a
+    \row \i HP-UX       \i \c .sl, \c .so (HP-UXi)
+    \row \i Mac OS X    \i \c .dylib, \c .bundle, \c .so
+    \endtable
+
+    Trailing versioning numbers on Unix are ignored.
+ */
+bool QLibrary::isLibrary(const QString &fileName)
+{
+#if defined(Q_OS_WIN32) || defined(Q_OS_WINCE)
+    return fileName.endsWith(QLatin1String(".dll"));
+#else
+    QString completeSuffix = QFileInfo(fileName).completeSuffix();
+    if (completeSuffix.isEmpty())
+        return false;
+    QStringList suffixes = completeSuffix.split(QLatin1Char('.'));
+# if defined(Q_OS_DARWIN)
+
+    // On Mac, libs look like libmylib.1.0.0.dylib
+    const QString lastSuffix = suffixes.at(suffixes.count() - 1);
+    const QString firstSuffix = suffixes.at(0);
+
+    bool valid = (lastSuffix == QLatin1String("dylib")
+            || firstSuffix == QLatin1String("so")
+            || firstSuffix == QLatin1String("bundle"));
+
+    return valid;
+# else  // Generic Unix
+    QStringList validSuffixList;
+
+#  if defined(Q_OS_HPUX)
+/*
+    See "HP-UX Linker and Libraries User's Guide", section "Link-time Differences between PA-RISC and IPF":
+    "In PA-RISC (PA-32 and PA-64) shared libraries are suffixed with .sl. In IPF (32-bit and 64-bit),
+    the shared libraries are suffixed with .so. For compatibility, the IPF linker also supports the .sl suffix."
+ */
+    validSuffixList << QLatin1String("sl");
+#   if defined __ia64
+    validSuffixList << QLatin1String("so");
+#   endif
+#  elif defined(Q_OS_AIX)
+    validSuffixList << QLatin1String("a") << QLatin1String("so");
+#  elif defined(Q_OS_UNIX)
+    validSuffixList << QLatin1String("so");
+#  endif
+
+    // Examples of valid library names:
+    //  libfoo.so
+    //  libfoo.so.0
+    //  libfoo.so.0.3
+    //  libfoo-0.3.so
+    //  libfoo-0.3.so.0.3.0
+
+    int suffix;
+    int suffixPos = -1;
+    for (suffix = 0; suffix < validSuffixList.count() && suffixPos == -1; ++suffix)
+        suffixPos = suffixes.indexOf(validSuffixList.at(suffix));
+
+    bool valid = suffixPos != -1;
+    for (int i = suffixPos + 1; i < suffixes.count() && valid; ++i)
+        if (i != suffixPos)
+            suffixes.at(i).toInt(&valid);
+    return valid;
+# endif
+#endif
+
+}
+
+bool QLibraryPrivate::isPlugin(QSettings *settings)
+{
+    errorString.clear();
+    if (pluginState != MightBeAPlugin)
+        return pluginState == IsAPlugin;
+
+#ifndef QT_NO_PLUGIN_CHECK
+    bool debug = !QLIBRARY_AS_DEBUG;
+    QByteArray key;
+    bool success = false;
+
+    QFileInfo fileinfo(fileName);
+
+#ifndef QT_NO_DATESTRING
+    lastModified  = fileinfo.lastModified().toString(Qt::ISODate);
+#endif
+    QString regkey = QString::fromLatin1("Qt Plugin Cache %1.%2.%3/%4")
+                     .arg((QT_VERSION & 0xff0000) >> 16)
+                     .arg((QT_VERSION & 0xff00) >> 8)
+                     .arg(QLIBRARY_AS_DEBUG ? QLatin1String("debug") : QLatin1String("false"))
+                     .arg(fileName);
+    QStringList reg;
+#ifndef QT_NO_SETTINGS
+    bool madeSettings = false;
+    if (!settings) {
+        settings = new QSettings(QSettings::UserScope, QLatin1String("Trolltech"));
+        madeSettings = true;
+    }
+    reg = settings->value(regkey).toStringList();
+#endif
+    if (reg.count() == 4 && lastModified == reg.at(3)) {
+        qt_version = reg.at(0).toUInt(0, 16);
+        debug = bool(reg.at(1).toInt());
+        key = reg.at(2).toLatin1();
+        success = qt_version != 0;
+    } else {
+#if defined(Q_OS_UNIX) && !defined(Q_OS_MAC)
+        if (!pHnd) {
+            // use unix shortcut to avoid loading the library
+            success = qt_unix_query(fileName, &qt_version, &debug, &key, this);
+        } else
+#endif
+        {
+            bool temporary_load = false;
+#ifdef Q_OS_WIN
+            HMODULE hTempModule = 0;
+#endif
+            if (!pHnd) {
+#ifdef Q_OS_WIN
+                QT_WA({
+                    hTempModule = ::LoadLibraryExW((wchar_t*)QDir::toNativeSeparators(fileName).utf16(), 0, DONT_RESOLVE_DLL_REFERENCES);
+                } , {
+                    temporary_load = load_sys();
+                });
+#else
+                temporary_load =  load_sys();
+#endif
+            }
+#  ifdef Q_CC_BOR
+            typedef const char * __stdcall (*QtPluginQueryVerificationDataFunction)();
+#  else
+            typedef const char * (*QtPluginQueryVerificationDataFunction)();
+#  endif
+#ifdef Q_OS_WIN
+            QtPluginQueryVerificationDataFunction qtPluginQueryVerificationDataFunction = hTempModule
+                ? (QtPluginQueryVerificationDataFunction)
+#ifdef Q_OS_WINCE
+                    ::GetProcAddressW(hTempModule, L"qt_plugin_query_verification_data")
+#else
+                    ::GetProcAddress(hTempModule, "qt_plugin_query_verification_data")
+#endif
+                : (QtPluginQueryVerificationDataFunction) resolve("qt_plugin_query_verification_data");
+#else
+            QtPluginQueryVerificationDataFunction qtPluginQueryVerificationDataFunction =
+                (QtPluginQueryVerificationDataFunction) resolve("qt_plugin_query_verification_data");
+#endif
+
+            if (!qtPluginQueryVerificationDataFunction
+                || !qt_parse_pattern(qtPluginQueryVerificationDataFunction(), &qt_version, &debug, &key)) {
+                qt_version = 0;
+                key = "unknown";
+                if (temporary_load)
+                    unload_sys();
+            } else {
+                success = true;
+            }
+#ifdef Q_OS_WIN
+            if (hTempModule) {
+                BOOL ok = ::FreeLibrary(hTempModule);
+                if (ok) {
+                    hTempModule = 0;
+                }
+
+            }
+#endif
+        }
+
+        QStringList queried;
+        queried << QString::number(qt_version,16)
+                << QString::number((int)debug)
+                << QLatin1String(key)
+                << lastModified;
+#ifndef QT_NO_SETTINGS
+        settings->setValue(regkey, queried);
+#endif
+    }
+#ifndef QT_NO_SETTINGS
+    if (madeSettings)
+        delete settings;
+#endif
+
+    if (!success) {
+        if (errorString.isEmpty()){
+            if (fileName.isEmpty())
+                errorString = QLibrary::tr("The shared library was not found.");
+            else
+                errorString = QLibrary::tr("The file '%1' is not a valid Qt plugin.").arg(fileName);
+        }
+        return false;
+    }
+
+    pluginState = IsNotAPlugin; // be pessimistic
+
+    if ((qt_version > QT_VERSION) || ((QT_VERSION & 0xff0000) > (qt_version & 0xff0000))) {
+        if (qt_debug_component()) {
+            qWarning("In %s:\n"
+                 "  Plugin uses incompatible Qt library (%d.%d.%d) [%s]",
+                 (const char*) QFile::encodeName(fileName),
+                 (qt_version&0xff0000) >> 16, (qt_version&0xff00) >> 8, qt_version&0xff,
+                 debug ? "debug" : "release");
+        }
+        errorString = QLibrary::tr("The plugin '%1' uses incompatible Qt library. (%2.%3.%4) [%5]")
+            .arg(fileName)
+            .arg((qt_version&0xff0000) >> 16)
+            .arg((qt_version&0xff00) >> 8)
+            .arg(qt_version&0xff)
+            .arg(debug ? QLatin1String("debug") : QLatin1String("release"));
+    } else if (key != QT_BUILD_KEY
+#ifdef QT_BUILD_KEY_COMPAT
+               // be sure to load plugins using an older but compatible build key
+               && key != QT_BUILD_KEY_COMPAT
+#endif
+               ) {
+        if (qt_debug_component()) {
+            qWarning("In %s:\n"
+                 "  Plugin uses incompatible Qt library\n"
+                 "  expected build key \"%s\", got \"%s\"",
+                 (const char*) QFile::encodeName(fileName),
+                 QT_BUILD_KEY,
+                 key.isEmpty() ? "<null>" : (const char *) key);
+        }
+        errorString = QLibrary::tr("The plugin '%1' uses incompatible Qt library."
+                 " Expected build key \"%2\", got \"%3\"")
+                 .arg(fileName)
+                 .arg(QLatin1String(QT_BUILD_KEY))
+                 .arg(key.isEmpty() ? QLatin1String("<null>") : QLatin1String((const char *) key));
+#ifndef QT_NO_DEBUG_PLUGIN_CHECK
+    } else if(debug != QLIBRARY_AS_DEBUG) {
+        //don't issue a qWarning since we will hopefully find a non-debug? --Sam
+        errorString = QLibrary::tr("The plugin '%1' uses incompatible Qt library."
+                 " (Cannot mix debug and release libraries.)").arg(fileName);
+#endif
+    } else {
+        pluginState = IsAPlugin;
+    }
+
+    return pluginState == IsAPlugin;
+#else
+    Q_UNUSED(settings);
+    return pluginState == MightBeAPlugin;
+#endif
+}
+
+/*!
+    Loads the library and returns true if the library was loaded
+    successfully; otherwise returns false. Since resolve() always
+    calls this function before resolving any symbols it is not
+    necessary to call it explicitly. In some situations you might want
+    the library loaded in advance, in which case you would use this
+    function.
+
+    \sa unload()
+*/
+bool QLibrary::load()
+{
+    if (!d)
+        return false;
+    if (did_load)
+        return d->pHnd;
+    did_load = true;
+    return d->load();
+}
+
+/*!
+    Unloads the library and returns true if the library could be
+    unloaded; otherwise returns false.
+
+    This happens automatically on application termination, so you
+    shouldn't normally need to call this function.
+
+    If other instances of QLibrary are using the same library, the
+    call will fail, and unloading will only happen when every instance
+    has called unload().
+
+    Note that on Mac OS X 10.3 (Panther), dynamic libraries cannot be unloaded.
+
+    \sa resolve(), load()
+*/
+bool QLibrary::unload()
+{
+    if (did_load) {
+        did_load = false;
+        return d->unload();
+    }
+    return false;
+}
+
+/*!
+    Returns true if the library is loaded; otherwise returns false.
+
+    \sa load()
+ */
+bool QLibrary::isLoaded() const
+{
+    return d && d->pHnd;
+}
+
+
+/*!
+    Constructs a library with the given \a parent.
+ */
+QLibrary::QLibrary(QObject *parent)
+    :QObject(parent), d(0), did_load(false)
+{
+}
+
+
+/*!
+    Constructs a library object with the given \a parent that will
+    load the library specified by \a fileName.
+
+    We recommend omitting the file's suffix in \a fileName, since
+    QLibrary will automatically look for the file with the appropriate
+    suffix in accordance with the platform, e.g. ".so" on Unix,
+    ".dylib" on Mac OS X, and ".dll" on Windows. (See \l{fileName}.)
+ */
+QLibrary::QLibrary(const QString& fileName, QObject *parent)
+    :QObject(parent), d(0), did_load(false)
+{
+    setFileName(fileName);
+}
+
+
+/*!
+    Constructs a library object with the given \a parent that will
+    load the library specified by \a fileName and major version number \a verNum.
+    Currently, the version number is ignored on Windows.
+
+    We recommend omitting the file's suffix in \a fileName, since
+    QLibrary will automatically look for the file with the appropriate
+    suffix in accordance with the platform, e.g. ".so" on Unix,
+    ".dylib" on Mac OS X, and ".dll" on Windows. (See \l{fileName}.)
+ */
+QLibrary::QLibrary(const QString& fileName, int verNum, QObject *parent)
+    :QObject(parent), d(0), did_load(false)
+{
+    setFileNameAndVersion(fileName, verNum);
+}
+
+/*!
+    Constructs a library object with the given \a parent that will
+    load the library specified by \a fileName and full version number \a version.
+    Currently, the version number is ignored on Windows.
+
+    We recommend omitting the file's suffix in \a fileName, since
+    QLibrary will automatically look for the file with the appropriate
+    suffix in accordance with the platform, e.g. ".so" on Unix,
+    ".dylib" on Mac OS X, and ".dll" on Windows. (See \l{fileName}.)
+ */
+QLibrary::QLibrary(const QString& fileName, const QString &version, QObject *parent)
+    :QObject(parent), d(0), did_load(false)
+{
+    setFileNameAndVersion(fileName, version);
+}
+
+/*!
+    Destroys the QLibrary object.
+
+    Unless unload() was called explicitly, the library stays in memory
+    until the application terminates.
+
+    \sa isLoaded(), unload()
+*/
+QLibrary::~QLibrary()
+{
+    if (d)
+        d->release();
+}
+
+
+/*!
+    \property QLibrary::fileName
+    \brief the file name of the library
+
+    We recommend omitting the file's suffix in the file name, since
+    QLibrary will automatically look for the file with the appropriate
+    suffix (see isLibrary()).
+
+    When loading the library, QLibrary searches in all system-specific
+    library locations (e.g. \c LD_LIBRARY_PATH on Unix), unless the
+    file name has an absolute path. After loading the library
+    successfully, fileName() returns the fully-qualified file name of
+    the library, including the full path to the library if one was given
+    in the constructor or passed to setFileName().
+
+    For example, after successfully loading the "GL" library on Unix
+    platforms, fileName() will return "libGL.so". If the file name was
+    originally passed as "/usr/lib/libGL", fileName() will return
+    "/usr/lib/libGL.so".
+*/
+
+void QLibrary::setFileName(const QString &fileName)
+{
+    QLibrary::LoadHints lh;
+    if (d) {
+        lh = d->loadHints;
+        d->release();
+        d = 0;
+        did_load = false;
+    }
+    d = QLibraryPrivate::findOrCreate(fileName);
+    d->loadHints = lh;
+}
+
+QString QLibrary::fileName() const
+{
+    if (d)
+        return d->qualifiedFileName.isEmpty() ? d->fileName : d->qualifiedFileName;
+    return QString();
+}
+
+/*!
+    \fn void QLibrary::setFileNameAndVersion(const QString &fileName, int versionNumber)
+
+    Sets the fileName property and major version number to \a fileName
+    and \a versionNumber respectively.
+    The \a versionNumber is ignored on Windows.
+    \sa setFileName()
+*/
+void QLibrary::setFileNameAndVersion(const QString &fileName, int verNum)
+{
+    QLibrary::LoadHints lh;
+    if (d) {
+        lh = d->loadHints;
+        d->release();
+        d = 0;
+        did_load = false;
+    }
+    d = QLibraryPrivate::findOrCreate(fileName, verNum >= 0 ? QString::number(verNum) : QString());
+    d->loadHints = lh;
+}
+
+/*!
+    \since 4.4
+
+    Sets the fileName property and full version number to \a fileName
+    and \a version respectively.
+    The \a version parameter is ignored on Windows.
+    \sa setFileName()
+*/
+void QLibrary::setFileNameAndVersion(const QString &fileName, const QString &version)
+{
+    QLibrary::LoadHints lh;
+    if (d) {
+        lh = d->loadHints;
+        d->release();
+        d = 0;
+        did_load = false;
+    }
+    d = QLibraryPrivate::findOrCreate(fileName, version);
+    d->loadHints = lh;
+}
+
+/*!
+    Returns the address of the exported symbol \a symbol. The library is
+    loaded if necessary. The function returns 0 if the symbol could
+    not be resolved or if the library could not be loaded.
+
+    Example:
+    \snippet doc/src/snippets/code/src_corelib_plugin_qlibrary.cpp 2
+
+    The symbol must be exported as a C function from the library. This
+    means that the function must be wrapped in an \c{extern "C"} if
+    the library is compiled with a C++ compiler. On Windows you must
+    also explicitly export the function from the DLL using the
+    \c{__declspec(dllexport)} compiler directive, for example:
+
+    \snippet doc/src/snippets/code/src_corelib_plugin_qlibrary.cpp 3
+
+    with \c MY_EXPORT defined as
+
+    \snippet doc/src/snippets/code/src_corelib_plugin_qlibrary.cpp 4
+
+*/
+void *QLibrary::resolve(const char *symbol)
+{
+    if (!load())
+        return 0;
+    return d->resolve(symbol);
+}
+
+/*!
+    \overload
+
+    Loads the library \a fileName and returns the address of the
+    exported symbol \a symbol. Note that \a fileName should not
+    include the platform-specific file suffix; (see \l{fileName}). The
+    library remains loaded until the application exits.
+
+    The function returns 0 if the symbol could not be resolved or if
+    the library could not be loaded.
+
+    \sa resolve()
+*/
+void *QLibrary::resolve(const QString &fileName, const char *symbol)
+{
+    QLibrary library(fileName);
+    return library.resolve(symbol);
+}
+
+/*!
+    \overload
+
+    Loads the library \a fileName with major version number \a verNum and
+    returns the address of the exported symbol \a symbol.
+    Note that \a fileName should not include the platform-specific file suffix;
+    (see \l{fileName}). The library remains loaded until the application exits.
+    \a verNum is ignored on Windows.
+
+    The function returns 0 if the symbol could not be resolved or if
+    the library could not be loaded.
+
+    \sa resolve()
+*/
+void *QLibrary::resolve(const QString &fileName, int verNum, const char *symbol)
+{
+    QLibrary library(fileName, verNum);
+    return library.resolve(symbol);
+}
+
+/*!
+    \overload
+    \since 4.4
+
+    Loads the library \a fileName with full version number \a version and
+    returns the address of the exported symbol \a symbol.
+    Note that \a fileName should not include the platform-specific file suffix;
+    (see \l{fileName}). The library remains loaded until the application exits.
+    \a version is ignored on Windows.
+
+    The function returns 0 if the symbol could not be resolved or if
+    the library could not be loaded.
+
+    \sa resolve()
+*/
+void *QLibrary::resolve(const QString &fileName, const QString &version, const char *symbol)
+{
+    QLibrary library(fileName, version);
+    return library.resolve(symbol);
+}
+
+/*!
+    \fn QString QLibrary::library() const
+
+    Use fileName() instead.
+*/
+
+/*!
+    \fn void QLibrary::setAutoUnload( bool b )
+
+    Use load(), isLoaded(), and unload() as necessary instead.
+*/
+
+/*!
+    \since 4.2
+
+    Returns a text string with the description of the last error that occurred.
+    Currently, errorString will only be set if load(), unload() or resolve() for some reason fails.
+*/
+QString QLibrary::errorString() const
+{
+    return (!d || d->errorString.isEmpty()) ? tr("Unknown error") : d->errorString;
+}
+
+/*!
+    \property QLibrary::loadHints
+    \brief Give the load() function some hints on how it should behave.
+
+    You can give some hints on how the symbols are resolved. Usually,
+    the symbols are not resolved at load time, but resolved lazily,
+    (that is, when resolve() is called). If you set the loadHint to
+    ResolveAllSymbolsHint, then all symbols will be resolved at load time
+    if the platform supports it.
+
+    Setting ExportExternalSymbolsHint will make the external symbols in the
+    library available for resolution in subsequent loaded libraries.
+
+    If LoadArchiveMemberHint is set, the file name
+    is composed of two components: A path which is a reference to an
+    archive file followed by the second component which is the reference to
+    the archive member. For instance, the fileName \c libGL.a(shr_64.o) will refer
+    to the library \c shr_64.o in the archive file named \c libGL.a. This
+    is only supported on the AIX platform.
+
+    The interpretation of the load hints is platform dependent, and if
+    you use it you are probably making some assumptions on which platform
+    you are compiling for, so use them only if you understand the consequences
+    of them.
+
+    By default, none of these flags are set, so libraries will be loaded with
+    lazy symbol resolution, and will not export external symbols for resolution
+    in other dynamically-loaded libraries.
+*/
+void QLibrary::setLoadHints(LoadHints hints)
+{
+    if (!d) {
+        d = QLibraryPrivate::findOrCreate(QString());   // ugly, but we need a d-ptr
+        d->errorString.clear();
+    }
+    d->loadHints = hints;
+}
+
+QLibrary::LoadHints QLibrary::loadHints() const
+{
+    return d ? d->loadHints : (QLibrary::LoadHints)0;
+}
+
+/* Internal, for debugging */
+bool qt_debug_component()
+{
+#if defined(QT_DEBUG_COMPONENT)
+    return true;    //compatibility?
+#else
+    static int debug_env = -1;
+    if (debug_env == -1)
+       debug_env = QT_PREPEND_NAMESPACE(qgetenv)("QT_DEBUG_PLUGINS").toInt();
+
+    return debug_env != 0;
+#endif
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
diff --git a/src/corelib/plugin/qlibrary.h b/src/corelib/plugin/qlibrary.h
new file mode 100644
index 0000000000..7e551e58bf
--- /dev/null
+++ b/src/corelib/plugin/qlibrary.h
@@ -0,0 +1,120 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QLIBRARY_H
+#define QLIBRARY_H
+
+#include <QtCore/qobject.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
+#undef QT_NO_LIBRARY
+#pragma message("QT_NO_LIBRARY is not supported on Windows")
+#endif
+
+#ifndef QT_NO_LIBRARY
+
+class QLibraryPrivate;
+
+class Q_CORE_EXPORT QLibrary : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
+    Q_PROPERTY(LoadHints loadHints READ loadHints WRITE setLoadHints)
+    Q_FLAGS(LoadHint LoadHints)
+public:
+    enum LoadHint {
+        ResolveAllSymbolsHint = 0x01,
+        ExportExternalSymbolsHint = 0x02,
+        LoadArchiveMemberHint = 0x04
+    };
+    Q_DECLARE_FLAGS(LoadHints, LoadHint)
+
+    explicit QLibrary(QObject *parent = 0);
+    explicit QLibrary(const QString& fileName, QObject *parent = 0);
+    explicit QLibrary(const QString& fileName, int verNum, QObject *parent = 0);
+    explicit QLibrary(const QString& fileName, const QString &version, QObject *parent = 0);
+    ~QLibrary();
+
+    void *resolve(const char *symbol);
+    static void *resolve(const QString &fileName, const char *symbol);
+    static void *resolve(const QString &fileName, int verNum, const char *symbol);
+    static void *resolve(const QString &fileName, const QString &version, const char *symbol);
+
+    bool load();
+    bool unload();
+    bool isLoaded() const;
+
+    static bool isLibrary(const QString &fileName);
+
+    void setFileName(const QString &fileName);
+    QString fileName() const;
+
+    void setFileNameAndVersion(const QString &fileName, int verNum);
+    void setFileNameAndVersion(const QString &fileName, const QString &version);
+    QString errorString() const;
+
+    void setLoadHints(LoadHints hints);
+    LoadHints loadHints() const;
+#ifdef QT3_SUPPORT
+    inline QT3_SUPPORT QString library() const { return fileName(); }
+    inline QT3_SUPPORT void setAutoUnload( bool ) {}
+#endif
+private:
+    QLibraryPrivate *d;
+    bool did_load;
+    Q_DISABLE_COPY(QLibrary)
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QLibrary::LoadHints)
+
+#endif //QT_NO_LIBRARY
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif //QLIBRARY_H
diff --git a/src/corelib/plugin/qlibrary_p.h b/src/corelib/plugin/qlibrary_p.h
new file mode 100644
index 0000000000..36bde95f5d
--- /dev/null
+++ b/src/corelib/plugin/qlibrary_p.h
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QLIBRARY_P_H
+#define QLIBRARY_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of the QLibrary class.  This header file may change from
+// version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#ifdef Q_WS_WIN
+# include "QtCore/qt_windows.h"
+#endif
+#include "QtCore/qlibrary.h"
+#include "QtCore/qpointer.h"
+#include "QtCore/qstringlist.h"
+#include "QtCore/qplugin.h"
+
+#ifndef QT_NO_LIBRARY
+
+QT_BEGIN_NAMESPACE
+
+bool qt_debug_component();
+
+class QSettings;
+class QLibraryPrivate
+{
+public:
+
+#ifdef Q_WS_WIN
+    HINSTANCE
+#else
+    void *
+#endif
+    pHnd;
+
+    QString fileName, qualifiedFileName;
+    QString fullVersion;
+
+    bool load();
+    bool loadPlugin(); // loads and resolves instance
+    bool unload();
+    void release();
+    void *resolve(const char *);
+
+    static QLibraryPrivate *findOrCreate(const QString &fileName, const QString &version = QString());
+
+    QtPluginInstanceFunction instance;
+    uint qt_version;
+    QString lastModified;
+
+    QString errorString;
+    QLibrary::LoadHints loadHints;
+
+    bool isPlugin(QSettings *settings = 0);
+
+
+private:
+    explicit QLibraryPrivate(const QString &canonicalFileName, const QString &version);
+    ~QLibraryPrivate();
+
+    bool load_sys();
+    bool unload_sys();
+    void *resolve_sys(const char *);
+
+    QAtomicInt libraryRefCount;
+    QAtomicInt libraryUnloadCount;
+
+    enum {IsAPlugin, IsNotAPlugin, MightBeAPlugin } pluginState;
+    friend class QLibraryPrivateHasFriends;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
+
+#endif // QLIBRARY_P_H
diff --git a/src/corelib/plugin/qlibrary_unix.cpp b/src/corelib/plugin/qlibrary_unix.cpp
new file mode 100644
index 0000000000..08bd2d0843
--- /dev/null
+++ b/src/corelib/plugin/qlibrary_unix.cpp
@@ -0,0 +1,266 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+
+#include <qfile.h>
+#include "qlibrary_p.h"
+#include <qfileinfo.h>
+#include <qcoreapplication.h>
+
+#ifndef QT_NO_LIBRARY
+
+#ifdef Q_OS_MAC
+#  include <private/qcore_mac_p.h>
+#endif
+
+#if defined(QT_AOUT_UNDERSCORE)
+#include <string.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+#if !defined(QT_HPUX_LD)
+QT_BEGIN_INCLUDE_NAMESPACE
+#include <dlfcn.h>
+QT_END_INCLUDE_NAMESPACE
+#endif
+
+static QString qdlerror()
+{
+#if !defined(QT_HPUX_LD)
+    const char *err = dlerror();
+#else
+    const char *err = strerror(errno);
+#endif
+    return err ? QLatin1String("(")+QString::fromLocal8Bit(err) + QLatin1String(")"): QString();
+}
+
+bool QLibraryPrivate::load_sys()
+{
+    QFileInfo fi(fileName);
+    QString path = fi.path();
+    QString name = fi.fileName();
+    if (path == QLatin1String(".") && !fileName.startsWith(path))
+        path.clear();
+    else
+        path += QLatin1Char('/');
+
+    // The first filename we want to attempt to load is the filename as the callee specified.
+    // Thus, the first attempt we do must be with an empty prefix and empty suffix.
+    QStringList suffixes(QLatin1String("")), prefixes(QLatin1String(""));
+    if (pluginState != IsAPlugin) {
+        prefixes << QLatin1String("lib");
+#if defined(Q_OS_HPUX)
+        // according to
+        // http://docs.hp.com/en/B2355-90968/linkerdifferencesiapa.htm
+
+        // In PA-RISC (PA-32 and PA-64) shared libraries are suffixed
+        // with .sl. In IPF (32-bit and 64-bit), the shared libraries
+        // are suffixed with .so. For compatibility, the IPF linker
+        // also supports the .sl suffix.
+
+        // But since we don't know if we are built on HPUX or HPUXi,
+        // we support both .sl (and .<version>) and .so suffixes but
+        // .so is preferred.
+# if defined(__ia64)
+        if (!fullVersion.isEmpty()) {
+            suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
+        } else {
+            suffixes << QLatin1String(".so");
+        }
+# endif
+        if (!fullVersion.isEmpty()) {
+            suffixes << QString::fromLatin1(".sl.%1").arg(fullVersion);
+            suffixes << QString::fromLatin1(".%1").arg(fullVersion);
+        } else {
+            suffixes << QLatin1String(".sl");
+        }
+#elif defined(Q_OS_AIX)
+        suffixes << ".a";
+#else
+        if (!fullVersion.isEmpty()) {
+            suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
+        } else {
+            suffixes << QLatin1String(".so");
+        }
+#endif
+# ifdef Q_OS_MAC
+        if (!fullVersion.isEmpty()) {
+            suffixes << QString::fromLatin1(".%1.bundle").arg(fullVersion);
+            suffixes << QString::fromLatin1(".%1.dylib").arg(fullVersion);
+        } else {
+            suffixes << QLatin1String(".bundle") << QLatin1String(".dylib");
+        }
+#endif
+    }
+    int dlFlags = 0;
+#if defined(QT_HPUX_LD)
+    dlFlags = DYNAMIC_PATH | BIND_NONFATAL;
+    if (loadHints & QLibrary::ResolveAllSymbolsHint) {
+        dlFlags |= BIND_IMMEDIATE;
+    } else {
+        dlFlags |= BIND_DEFERRED;
+    }
+#else
+    if (loadHints & QLibrary::ResolveAllSymbolsHint) {
+        dlFlags |= RTLD_NOW;
+    } else {
+        dlFlags |= RTLD_LAZY;
+    }
+    if (loadHints & QLibrary::ExportExternalSymbolsHint) {
+        dlFlags |= RTLD_GLOBAL;
+    }
+#if !defined(Q_OS_CYGWIN)
+    else {
+#if defined(Q_OS_MAC)
+        if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4)
+#endif        
+        dlFlags |= RTLD_LOCAL;
+    }
+#endif
+#if defined(Q_OS_AIX)	// Not sure if any other platform actually support this thing.
+    if (loadHints & QLibrary::LoadArchiveMemberHint) {
+        dlFlags |= RTLD_MEMBER;
+    }
+#endif
+#endif // QT_HPUX_LD
+    QString attempt;
+    bool retry = true;
+    for(int prefix = 0; retry && !pHnd && prefix < prefixes.size(); prefix++) {
+        for(int suffix = 0; retry && !pHnd && suffix < suffixes.size(); suffix++) {
+            if (!prefixes.at(prefix).isEmpty() && name.startsWith(prefixes.at(prefix)))
+                continue;
+            if (!suffixes.at(suffix).isEmpty() && name.endsWith(suffixes.at(suffix)))
+                continue;
+            if (loadHints & QLibrary::LoadArchiveMemberHint) {
+                attempt = name;
+                int lparen = attempt.indexOf(QLatin1Char('('));
+                if (lparen == -1)
+                    lparen = attempt.count();
+                attempt = path + prefixes.at(prefix) + attempt.insert(lparen, suffixes.at(suffix));
+            } else {
+                attempt = path + prefixes.at(prefix) + name + suffixes.at(suffix);
+            }
+#if defined(QT_HPUX_LD)
+            pHnd = (void*)shl_load(QFile::encodeName(attempt), dlFlags, 0);
+#else
+            pHnd = dlopen(QFile::encodeName(attempt), dlFlags);
+#endif
+            if (!pHnd && fileName.startsWith(QLatin1Char('/')) && QFile::exists(attempt)) {
+                // We only want to continue if dlopen failed due to that the shared library did not exist.
+                // However, we are only able to apply this check for absolute filenames (since they are
+                // not influenced by the content of LD_LIBRARY_PATH, /etc/ld.so.cache, DT_RPATH etc...)
+                // This is all because dlerror is flawed and cannot tell us the reason why it failed.
+                retry = false;
+            }
+        }
+    }
+
+#ifdef Q_OS_MAC
+    if (!pHnd) {
+        if (CFBundleRef bundle = CFBundleGetBundleWithIdentifier(QCFString(fileName))) {
+            QCFType<CFURLRef> url = CFBundleCopyExecutableURL(bundle);
+            QCFString str = CFURLCopyFileSystemPath(url, kCFURLPOSIXPathStyle);
+            pHnd = dlopen(QFile::encodeName(str), dlFlags);
+            attempt = str;
+        }
+    }
+# endif
+    if (!pHnd) {
+        errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName).arg(qdlerror());
+    }
+    if (pHnd) {
+        qualifiedFileName = attempt;
+        errorString.clear();
+    }
+    return (pHnd != 0);
+}
+
+bool QLibraryPrivate::unload_sys()
+{
+#if defined(QT_HPUX_LD)
+    if (shl_unload((shl_t)pHnd)) {
+#else
+    if (dlclose(pHnd)) {
+#endif
+        errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName).arg(qdlerror());
+        return false;
+    }
+    errorString.clear();
+    return true;
+}
+
+#ifdef Q_OS_MAC
+Q_CORE_EXPORT void *qt_mac_resolve_sys(void *handle, const char *symbol)
+{
+    return dlsym(handle, symbol);
+}
+#endif
+
+void* QLibraryPrivate::resolve_sys(const char* symbol)
+{
+#if defined(QT_AOUT_UNDERSCORE)
+    // older a.out systems add an underscore in front of symbols
+    char* undrscr_symbol = new char[strlen(symbol)+2];
+    undrscr_symbol[0] = '_';
+    strcpy(undrscr_symbol+1, symbol);
+    void* address = dlsym(pHnd, undrscr_symbol);
+    delete [] undrscr_symbol;
+#elif defined(QT_HPUX_LD)
+    void* address = 0;
+    if (shl_findsym((shl_t*)&pHnd, symbol, TYPE_UNDEFINED, &address) < 0)
+        address = 0;
+#else
+    void* address = dlsym(pHnd, symbol);
+#endif
+    if (!address) {
+        errorString = QLibrary::tr("Cannot resolve symbol \"%1\" in %2: %3").arg(
+            QString::fromAscii(symbol)).arg(fileName).arg(qdlerror());
+    } else {
+        errorString.clear();
+    }
+    return address;
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
diff --git a/src/corelib/plugin/qlibrary_win.cpp b/src/corelib/plugin/qlibrary_win.cpp
new file mode 100644
index 0000000000..bbd698db78
--- /dev/null
+++ b/src/corelib/plugin/qlibrary_win.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+#include "qlibrary_p.h"
+#include "qfile.h"
+#include "qdir.h"
+#include "qfileinfo.h"
+#include "qdir.h"
+
+#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
+#undef QT_NO_LIBRARY
+#pragma message("QT_NO_LIBRARY is not supported on Windows")
+#endif
+
+#include "qt_windows.h"
+
+QT_BEGIN_NAMESPACE
+
+extern QString qt_error_string(int code);
+
+bool QLibraryPrivate::load_sys()
+{
+#ifdef Q_OS_WINCE
+    QString attempt = QFileInfo(fileName).absoluteFilePath();
+#else
+    QString attempt = fileName;
+#endif
+
+    //avoid 'Bad Image' message box
+    UINT oldmode = SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
+    QT_WA({
+        pHnd = LoadLibraryW((TCHAR*)QDir::toNativeSeparators(attempt).utf16());
+    } , {
+        pHnd = LoadLibraryA(QFile::encodeName(QDir::toNativeSeparators(attempt)).data());
+    });
+    
+    if (pluginState != IsAPlugin) {
+#if defined(Q_OS_WINCE)
+        if (!pHnd && ::GetLastError() == ERROR_MOD_NOT_FOUND) {
+            QString secondAttempt = fileName;
+            QT_WA({
+                pHnd = LoadLibraryW((TCHAR*)QDir::toNativeSeparators(secondAttempt).utf16());
+            } , {
+                pHnd = LoadLibraryA(QFile::encodeName(QDir::toNativeSeparators(secondAttempt)).data());
+            });
+        }
+#endif
+        if (!pHnd && ::GetLastError() == ERROR_MOD_NOT_FOUND) {
+            attempt += QLatin1String(".dll");
+            QT_WA({
+                pHnd = LoadLibraryW((TCHAR*)QDir::toNativeSeparators(attempt).utf16());
+            } , {
+                pHnd = LoadLibraryA(QFile::encodeName(QDir::toNativeSeparators(attempt)).data());
+            });
+        }
+    }
+
+    SetErrorMode(oldmode);
+    if (!pHnd) {
+        errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName).arg(qt_error_string());
+    }
+    if (pHnd) {
+        errorString.clear();
+        QT_WA({
+            TCHAR buffer[MAX_PATH + 1];
+            ::GetModuleFileNameW(pHnd, buffer, MAX_PATH);
+            attempt = QString::fromUtf16(reinterpret_cast<const ushort *>(&buffer));
+        }, {
+            char buffer[MAX_PATH + 1];
+            ::GetModuleFileNameA(pHnd, buffer, MAX_PATH);
+            attempt = QString::fromLocal8Bit(buffer);
+        });
+        const QDir dir =  QFileInfo(fileName).dir();
+        const QString realfilename = attempt.mid(attempt.lastIndexOf(QLatin1Char('\\')) + 1);
+        if (dir.path() == QLatin1String("."))
+            qualifiedFileName = realfilename;
+        else
+            qualifiedFileName = dir.filePath(realfilename);
+    }
+    return (pHnd != 0);
+}
+
+bool QLibraryPrivate::unload_sys()
+{
+    if (!FreeLibrary(pHnd)) {
+        errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName).arg(qt_error_string());
+        return false;
+    }
+    errorString.clear();
+    return true;
+}
+
+void* QLibraryPrivate::resolve_sys(const char* symbol)
+{
+#ifdef Q_OS_WINCE
+    void* address = (void*)GetProcAddress(pHnd, (const wchar_t*)QString::fromLatin1(symbol).utf16());
+#else
+    void* address = (void*)GetProcAddress(pHnd, symbol);
+#endif
+    if (!address) {
+        errorString = QLibrary::tr("Cannot resolve symbol \"%1\" in %2: %3").arg(
+            QString::fromAscii(symbol)).arg(fileName).arg(qt_error_string());
+    } else {
+        errorString.clear();
+    }
+    return address;
+}
+QT_END_NAMESPACE
diff --git a/src/corelib/plugin/qplugin.h b/src/corelib/plugin/qplugin.h
new file mode 100644
index 0000000000..4d0e53c2b0
--- /dev/null
+++ b/src/corelib/plugin/qplugin.h
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLUGIN_H
+#define QPLUGIN_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qpointer.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+#ifndef Q_EXTERN_C
+#  ifdef __cplusplus
+#    define Q_EXTERN_C extern "C"
+#  else
+#    define Q_EXTERN_C extern
+#  endif
+#endif
+
+typedef QObject *(*QtPluginInstanceFunction)();
+
+void Q_CORE_EXPORT qRegisterStaticPluginInstanceFunction(QtPluginInstanceFunction function);
+
+#define Q_IMPORT_PLUGIN(PLUGIN) \
+        extern QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGIN(); \
+        class Static##PLUGIN##PluginInstance{ \
+        public: \
+                Static##PLUGIN##PluginInstance() { \
+                qRegisterStaticPluginInstanceFunction(qt_plugin_instance_##PLUGIN); \
+                } \
+        }; \
+       static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;
+
+#define Q_PLUGIN_INSTANCE(IMPLEMENTATION) \
+        { \
+            static QT_PREPEND_NAMESPACE(QPointer)<QT_PREPEND_NAMESPACE(QObject)> _instance; \
+            if (!_instance)      \
+                _instance = new IMPLEMENTATION; \
+            return _instance; \
+        }
+
+#  define Q_EXPORT_PLUGIN(PLUGIN) \
+            Q_EXPORT_PLUGIN2(PLUGIN, PLUGIN)
+
+#  define Q_EXPORT_STATIC_PLUGIN(PLUGIN) \
+            Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGIN)
+
+#if defined(QT_STATICPLUGIN)
+
+#  define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \
+            QT_PREPEND_NAMESPACE(QObject) \
+                *qt_plugin_instance_##PLUGIN() \
+            Q_PLUGIN_INSTANCE(PLUGINCLASS)
+
+#  define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS) \
+            Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS)
+
+#else
+// NOTE: if you change pattern, you MUST change the pattern in
+// qlibrary.cpp as well.  changing the pattern will break all
+// backwards compatibility as well (no old plugins will be loaded).
+#  ifdef QPLUGIN_DEBUG_STR
+#    undef QPLUGIN_DEBUG_STR
+#  endif
+#  ifdef QT_NO_DEBUG
+#    define QPLUGIN_DEBUG_STR "false"
+#  else
+#    define QPLUGIN_DEBUG_STR "true"
+#  endif
+#  define Q_PLUGIN_VERIFICATION_DATA \
+    static const char *qt_plugin_verification_data = \
+      "pattern=""QT_PLUGIN_VERIFICATION_DATA""\n" \
+      "version="QT_VERSION_STR"\n" \
+      "debug="QPLUGIN_DEBUG_STR"\n" \
+      "buildkey="QT_BUILD_KEY"\0";
+
+#  if defined (Q_OS_WIN32) && defined(Q_CC_BOR)
+#     define Q_STANDARD_CALL __stdcall
+#  else
+#     define Q_STANDARD_CALL
+#  endif
+
+#  define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS)      \
+            Q_PLUGIN_VERIFICATION_DATA \
+            Q_EXTERN_C Q_DECL_EXPORT \
+            const char * Q_STANDARD_CALL qt_plugin_query_verification_data() \
+            { return qt_plugin_verification_data; } \
+            Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) * Q_STANDARD_CALL qt_plugin_instance() \
+            Q_PLUGIN_INSTANCE(PLUGINCLASS)
+
+#  define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS)
+
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // Q_PLUGIN_H
diff --git a/src/corelib/plugin/qpluginloader.cpp b/src/corelib/plugin/qpluginloader.cpp
new file mode 100644
index 0000000000..15ebe3d792
--- /dev/null
+++ b/src/corelib/plugin/qpluginloader.cpp
@@ -0,0 +1,371 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qplatformdefs.h"
+
+#include "qplugin.h"
+#include "qpluginloader.h"
+#include <qfileinfo.h>
+#include "qlibrary_p.h"
+#include "qdebug.h"
+
+#ifndef QT_NO_LIBRARY
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QPluginLoader
+    \reentrant
+    \brief The QPluginLoader class loads a plugin at run-time.
+
+    \mainclass
+    \ingroup plugins
+
+    QPluginLoader provides access to a \l{How to Create Qt
+    Plugins}{Qt plugin}. A Qt plugin is stored in a shared library (a
+    DLL) and offers these benefits over shared libraries accessed
+    using QLibrary:
+
+    \list
+    \o QPluginLoader checks that a plugin is linked against the same
+       version of Qt as the application.
+    \o QPluginLoader provides direct access to a root component object
+       (instance()), instead of forcing you to resolve a C function manually.
+    \endlist
+
+    An instance of a QPluginLoader object operates on a single shared
+    library file, which we call a plugin. It provides access to the
+    functionality in the plugin in a platform-independent way. To
+    specify which plugin to load, either pass a file name in
+    the constructor or set it with setFileName().
+
+    The most important functions are load() to dynamically load the
+    plugin file, isLoaded() to check whether loading was successful,
+    and instance() to access the root component in the plugin. The
+    instance() function implicitly tries to load the plugin if it has
+    not been loaded yet. Multiple instances of QPluginLoader can be
+    used to access the same physical plugin.
+
+    Once loaded, plugins remain in memory until all instances of
+    QPluginLoader has been unloaded, or until the application
+    terminates. You can attempt to unload a plugin using unload(),
+    but if other instances of QPluginLoader are using the same
+    library, the call will fail, and unloading will only happen when
+    every instance has called unload(). Right before the unloading
+    happen, the root component will also be deleted.
+
+    In order to speed up loading and validation of plugins, some of
+    the information that is collected during loading is cached in
+    persistent memory (through QSettings). For instance, the result
+    of a load operation (e.g. succeeded or failed) is stored in the
+    cache, so that subsequent load operations don't try to load an
+    invalid plugin. However, if the "last modified" timestamp of
+    a plugin has changed, the plugin's cache entry is invalidated
+    and the plugin is reloaded regardless of the values in the cache
+    entry. The cache entry is then updated with the new result of the
+    load operation.
+
+    This also means that the timestamp must be updated each time the
+    plugin or any dependent resources (such as a shared library) is
+    updated, since the dependent resources might influence the result
+    of loading a plugin.
+
+    See \l{How to Create Qt Plugins} for more information about
+    how to make your application extensible through plugins.
+
+    Note that the QPluginLoader cannot be used if your application is
+    statically linked against Qt. In this case, you will also have to
+    link to plugins statically. You can use QLibrary if you need to
+    load dynamic libraries in a statically linked application.
+
+    \sa QLibrary, {Plug & Paint Example}
+*/
+
+/*!
+    Constructs a plugin loader with the given \a parent.
+*/
+QPluginLoader::QPluginLoader(QObject *parent)
+    : QObject(parent), d(0), did_load(false)
+{
+}
+
+/*!
+    Constructs a plugin loader with the given \a parent that will
+    load the plugin specified by \a fileName.
+
+    To be loadable, the file's suffix must be a valid suffix for a
+    loadable library in accordance with the platform, e.g. \c .so on
+    Unix, - \c .dylib on Mac OS X, and \c .dll on Windows. The suffix
+    can be verified with QLibrary::isLibrary().
+
+    \sa setFileName()
+*/
+QPluginLoader::QPluginLoader(const QString &fileName, QObject *parent)
+    : QObject(parent), d(0), did_load(false)
+{
+    setFileName(fileName);
+}
+
+/*!
+    Destroys the QPluginLoader object.
+
+    Unless unload() was called explicitly, the plugin stays in memory
+    until the application terminates.
+
+    \sa isLoaded(), unload()
+*/
+QPluginLoader::~QPluginLoader()
+{
+    if (d)
+        d->release();
+}
+
+/*!
+    Returns the root component object of the plugin. The plugin is
+    loaded if necessary. The function returns 0 if the plugin could
+    not be loaded or if the root component object could not be
+    instantiated.
+
+    If the root component object was destroyed, calling this function
+    creates a new instance.
+
+    The root component, returned by this function, is not deleted when
+    the QPluginLoader is destroyed. If you want to ensure that the root
+    component is deleted, you should call unload() as soon you don't
+    need to access the core component anymore.  When the library is 
+    finally unloaded, the root component will automatically be deleted.
+
+    The component object is a QObject. Use qobject_cast() to access
+    interfaces you are interested in.
+
+    \sa load()
+*/
+QObject *QPluginLoader::instance()
+{
+    if (!load())
+        return 0;
+    if (d->instance)
+        return d->instance();
+    return 0;
+}
+
+/*!
+    Loads the plugin and returns true if the plugin was loaded
+    successfully; otherwise returns false. Since instance() always
+    calls this function before resolving any symbols it is not
+    necessary to call it explicitly. In some situations you might want
+    the plugin loaded in advance, in which case you would use this
+    function.
+
+    \sa unload()
+*/
+bool QPluginLoader::load()
+{
+    if (!d || d->fileName.isEmpty())
+        return false;
+    if (did_load)
+        return d->pHnd && d->instance;
+    if (!d->isPlugin())
+        return false;
+    did_load = true;
+    return d->loadPlugin();
+}
+
+
+/*!
+    Unloads the plugin and returns true if the plugin could be
+    unloaded; otherwise returns false.
+
+    This happens automatically on application termination, so you
+    shouldn't normally need to call this function.
+
+    If other instances of QPluginLoader are using the same plugin, the
+    call will fail, and unloading will only happen when every instance
+    has called unload().
+
+    Don't try to delete the root component. Instead rely on 
+    that unload() will automatically delete it when needed.
+    
+    \sa instance(), load()
+*/
+bool QPluginLoader::unload()
+{
+    if (did_load) {
+        did_load = false;
+        return d->unload();
+    }
+    if (d)  // Ouch
+        d->errorString = tr("The plugin was not loaded.");
+    return false;
+}
+
+/*!
+    Returns true if the plugin is loaded; otherwise returns false.
+
+    \sa load()
+ */
+bool QPluginLoader::isLoaded() const
+{
+    return d && d->pHnd && d->instance;
+}
+
+/*!
+    \property QPluginLoader::fileName
+    \brief the file name of the plugin
+
+    To be loadable, the file's suffix must be a valid suffix for a
+    loadable library in accordance with the platform, e.g. \c .so on
+    Unix, \c .dylib on Mac OS X, and \c .dll on Windows. The suffix
+    can be verified with QLibrary::isLibrary().
+
+    If the file name does not exist, it will not be set. This property
+    will then contain an empty string.
+
+    By default, this property contains an empty string.
+
+    \sa load()
+*/
+void QPluginLoader::setFileName(const QString &fileName)
+{
+#if defined(QT_SHARED)
+    QLibrary::LoadHints lh;
+    if (d) {
+        lh = d->loadHints;
+        d->release();
+        d = 0;
+        did_load = false;
+    }
+    QString fn = QFileInfo(fileName).canonicalFilePath();
+    d = QLibraryPrivate::findOrCreate(fn);
+    d->loadHints = lh;
+    if (fn.isEmpty())
+        d->errorString = QLibrary::tr("The shared library was not found.");
+#else
+    if (qt_debug_component()) {
+        qWarning("Cannot load %s into a statically linked Qt library.",
+            (const char*)QFile::encodeName(fileName));
+    }
+    Q_UNUSED(fileName);
+#endif
+}
+
+QString QPluginLoader::fileName() const
+{
+    if (d)
+        return d->fileName;
+    return QString();
+}
+
+/*!
+    \since 4.2
+
+    Returns a text string with the description of the last error that occurred.
+*/
+QString QPluginLoader::errorString() const
+{
+    return (!d || d->errorString.isEmpty()) ? tr("Unknown error") : d->errorString;
+}
+
+typedef QList<QtPluginInstanceFunction> StaticInstanceFunctionList;
+Q_GLOBAL_STATIC(StaticInstanceFunctionList, staticInstanceFunctionList)
+
+/*! \since 4.4
+
+    \property QPluginLoader::loadHints
+    \brief Give the load() function some hints on how it should behave.
+
+    You can give hints on how the symbols in the plugin are
+    resolved. By default, none of the hints are set.
+
+    See the documentation of QLibrary::loadHints for a complete
+    description of how this property works.
+
+    \sa QLibrary::loadHints
+*/
+
+void QPluginLoader::setLoadHints(QLibrary::LoadHints loadHints)
+{
+    if (!d) {
+        d = QLibraryPrivate::findOrCreate(QString());   // ugly, but we need a d-ptr
+        d->errorString.clear();
+    }
+    d->loadHints = loadHints;
+}
+
+QLibrary::LoadHints QPluginLoader::loadHints() const
+{
+    if (!d) {
+        QPluginLoader *that = const_cast<QPluginLoader *>(this);
+        that->d = QLibraryPrivate::findOrCreate(QString());   // ugly, but we need a d-ptr
+        that->d->errorString.clear();
+    }
+    return d->loadHints;
+}
+
+/*!
+    \relates QPluginLoader
+    \since 4.4
+
+    Registers the given \a function with the plugin loader.
+*/
+void Q_CORE_EXPORT qRegisterStaticPluginInstanceFunction(QtPluginInstanceFunction function)
+{
+    staticInstanceFunctionList()->append(function);
+}
+
+/*!
+    Returns a list of static plugin instances (root components) held
+    by the plugin loader.
+*/
+QObjectList QPluginLoader::staticInstances()
+{
+    QObjectList instances;
+    StaticInstanceFunctionList *functions = staticInstanceFunctionList();
+    if (functions) {
+        for (int i = 0; i < functions->count(); ++i)
+            instances.append((*functions)[i]());
+    }
+    return instances;
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LIBRARY
diff --git a/src/corelib/plugin/qpluginloader.h b/src/corelib/plugin/qpluginloader.h
new file mode 100644
index 0000000000..7b8b9ed6e0
--- /dev/null
+++ b/src/corelib/plugin/qpluginloader.h
@@ -0,0 +1,100 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPLUGINLOADER_H
+#define QPLUGINLOADER_H
+
+#include <QtCore/qlibrary.h>
+
+#if defined(QT_NO_LIBRARY) && defined(Q_OS_WIN)
+#undef QT_NO_LIBRARY
+#pragma message("QT_NO_LIBRARY is not supported on Windows")
+#endif
+
+#ifndef QT_NO_LIBRARY
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+class QLibraryPrivate;
+
+class Q_CORE_EXPORT QPluginLoader : public QObject
+{
+    Q_OBJECT
+    Q_PROPERTY(QString fileName READ fileName WRITE setFileName)
+    Q_PROPERTY(QLibrary::LoadHints loadHints READ loadHints WRITE setLoadHints)
+public:
+    explicit QPluginLoader(QObject *parent = 0);
+    explicit QPluginLoader(const QString &fileName, QObject *parent = 0);
+    ~QPluginLoader();
+
+    QObject *instance();
+
+    static QObjectList staticInstances();
+
+    bool load();
+    bool unload();
+    bool isLoaded() const;
+
+    void setFileName(const QString &fileName);
+    QString fileName() const;
+
+    QString errorString() const;
+
+    void setLoadHints(QLibrary::LoadHints loadHints);
+    QLibrary::LoadHints loadHints() const;
+
+private:
+    QLibraryPrivate *d;
+    bool did_load;
+    Q_DISABLE_COPY(QPluginLoader)
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QT_NO_LIBRARY
+
+#endif //QPLUGINLOADER_H
diff --git a/src/corelib/plugin/quuid.cpp b/src/corelib/plugin/quuid.cpp
new file mode 100644
index 0000000000..3e05d28834
--- /dev/null
+++ b/src/corelib/plugin/quuid.cpp
@@ -0,0 +1,624 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "quuid.h"
+
+#include "qdatastream.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+    \class QUuid
+    \brief The QUuid class stores a Universally Unique Identifier (UUID).
+
+    \reentrant
+    \ingroup misc
+
+    Using \e{U}niversally \e{U}nique \e{ID}entifiers (UUID) is a
+    standard way to uniquely identify entities in a distributed
+    computing environment. A UUID is a 16-byte (128-bit) number
+    generated by some algorithm that is meant to guarantee that the
+    UUID will be unique in the distributed computing environment where
+    it is used. The acronym GUID is often used instead, \e{G}lobally
+    \e{U}nique \e{ID}entifiers, but it refers to the same thing.
+
+    \target Variant field
+    Actually, the GUID is one \e{variant} of UUID. Multiple variants
+    are in use. Each UUID contains a bit field that specifies which
+    type (variant) of UUID it is. Call variant() to discover which
+    type of UUID an instance of QUuid contains. It extracts the three
+    most signifcant bits of byte 8 of the 16 bytes. In QUuid, byte 8
+    is \c{QUuid::data4[0]}. If you create instances of QUuid using the
+    constructor that accepts all the numeric values as parameters, use
+    the following table to set the three most significant bits of
+    parameter \c{b1}, which becomes \c{QUuid::data4[0]} and contains
+    the variant field in its three most significant bits. In the
+    table, 'x' means \e {don't care}.
+
+    \table
+    \header
+    \o msb0
+    \o msb1
+    \o msb2
+    \o Variant 
+
+    \row
+    \o 0
+    \o x
+    \o x
+    \o NCS (Network Computing System)
+
+    \row
+    \o 1
+    \o 0
+    \o x
+    \o DCE (Distributed Computing Environment)
+
+    \row
+    \o 1
+    \o 1
+    \o 0
+    \o Microsoft (GUID)
+
+    \row
+    \o 1
+    \o 1
+    \o 1
+    \o Reserved for future expansion
+
+    \endtable
+
+    \target Version field
+    If variant() returns QUuid::DCE, the UUID also contains a
+    \e{version} field in the four most significant bits of
+    \c{QUuid::data3}, and you can call version() to discover which
+    version your QUuid contains. If you create instances of QUuid
+    using the constructor that accepts all the numeric values as
+    parameters, use the following table to set the four most
+    significant bits of parameter \c{w2}, which becomes
+    \c{QUuid::data3} and contains the version field in its four most
+    significant bits.
+
+    \table
+    \header
+    \o msb0
+    \o msb1
+    \o msb2
+    \o msb3
+    \o Version
+
+    \row
+    \o 0
+    \o 0
+    \o 0
+    \o 1
+    \o Time
+
+    \row
+    \o 0
+    \o 0
+    \o 1
+    \o 0
+    \o Embedded POSIX
+
+    \row
+    \o 0
+    \o 0
+    \o 1
+    \o 1
+    \o Name
+
+    \row
+    \o 0
+    \o 1
+    \o 0
+    \o 0
+    \o Random
+
+    \endtable
+
+    The field layouts for the DCE versions listed in the table above
+    are specified in the \l{http://www.ietf.org/rfc/rfc4122.txt}
+    {Network Working Group UUID Specification}.
+    
+    Most platforms provide a tool for generating new UUIDs, e.g. \c
+    uuidgen and \c guidgen. You can also use createUuid().  UUIDs
+    generated by createUuid() are of the random type.  Their
+    QUuid::Version bits are set to QUuid::Random, and their
+    QUuid::Variant bits are set to QUuid::DCE. The rest of the UUID is
+    composed of random numbers. Theoretically, this means there is a
+    small chance that a UUID generated by createUuid() will not be
+    unique. But it is
+    \l{http://en.wikipedia.org/wiki/Universally_Unique_Identifier#Random_UUID_probability_of_duplicates}
+    {a \e{very} small chance}.
+
+    UUIDs can be constructed from numeric values or from strings, or
+    using the static createUuid() function. They can be converted to a
+    string with toString(). UUIDs have a variant() and a version(),
+    and null UUIDs return true from isNull().
+*/
+
+/*!
+    \fn QUuid::QUuid(const GUID &guid)
+
+    Casts a Windows \a guid to a Qt QUuid.
+
+    \warning This function is only for Windows platforms.
+*/
+
+/*!
+    \fn QUuid &QUuid::operator=(const GUID &guid)
+
+    Assigns a Windows \a guid to a Qt QUuid.
+
+    \warning This function is only for Windows platforms.
+*/
+
+/*!
+    \fn QUuid::operator GUID() const
+
+    Returns a Windows GUID from a QUuid.
+
+    \warning This function is only for Windows platforms.
+*/
+
+/*!
+    \fn QUuid::QUuid()
+
+    Creates the null UUID. toString() will output the null UUID
+    as "{00000000-0000-0000-0000-000000000000}".
+*/
+
+/*!
+    \fn QUuid::QUuid(uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8)
+
+    Creates a UUID with the value specified by the parameters, \a l,
+    \a w1, \a w2, \a b1, \a b2, \a b3, \a b4, \a b5, \a b6, \a b7, \a
+    b8.
+
+    Example:
+    \snippet doc/src/snippets/code/src_corelib_plugin_quuid.cpp 0
+*/
+
+#ifndef QT_NO_QUUID_STRING
+/*!
+  Creates a QUuid object from the string \a text, which must be
+  formatted as five hex fields separated by '-', e.g.,
+  "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}" where 'x' is a hex
+  digit. The curly braces shown here are optional, but it is normal to
+  include them. If the conversion fails, a null UUID is created.  See
+  toString() for an explanation of how the five hex fields map to the
+  public data members in QUuid.
+
+    \sa toString(), QUuid()
+*/
+QUuid::QUuid(const QString &text)
+{
+    bool ok;
+    if (text.isEmpty()) {
+        *this = QUuid();
+        return;
+    }
+    QString temp = text.toUpper();
+    if (temp[0] != QLatin1Char('{'))
+        temp = QLatin1Char('{') + text;
+    if (text[(int)text.length()-1] != QLatin1Char('}'))
+        temp += QLatin1Char('}');
+
+    data1 = temp.mid(1, 8).toULongLong(&ok, 16);
+    if (!ok) {
+        *this = QUuid();
+        return;
+    }
+
+    data2 = temp.mid(10, 4).toUInt(&ok, 16);
+    if (!ok) {
+        *this = QUuid();
+        return;
+    }
+    data3 = temp.mid(15, 4).toUInt(&ok, 16);
+    if (!ok) {
+        *this = QUuid();
+        return;
+    }
+    data4[0] = temp.mid(20, 2).toUInt(&ok, 16);
+    if (!ok) {
+        *this = QUuid();
+        return;
+    }
+    data4[1] = temp.mid(22, 2).toUInt(&ok, 16);
+    if (!ok) {
+        *this = QUuid();
+        return;
+    }
+    for (int i = 2; i<8; i++) {
+        data4[i] = temp.mid(25 + (i-2)*2, 2).toUShort(&ok, 16);
+        if (!ok) {
+            *this = QUuid();
+            return;
+        }
+    }
+}
+
+/*!
+    \internal
+*/
+QUuid::QUuid(const char *text)
+{
+    *this = QUuid(QString::fromLatin1(text));
+}
+#endif
+
+/*!
+    \fn bool QUuid::operator==(const QUuid &other) const
+
+    Returns true if this QUuid and the \a other QUuid are identical;
+    otherwise returns false.
+*/
+
+/*!
+    \fn bool QUuid::operator!=(const QUuid &other) const
+
+    Returns true if this QUuid and the \a other QUuid are different;
+    otherwise returns false.
+*/
+#ifndef QT_NO_QUUID_STRING
+/*!
+    \fn QUuid::operator QString() const
+
+    Returns the string representation of the uuid.
+
+    \sa toString()
+*/
+
+static QString uuidhex(uint data, int digits)
+{
+    return QString::number(data, 16).rightJustified(digits, QLatin1Char('0'));
+}
+
+/*!
+    Returns the string representation of this QUuid. The string is
+    formatted as five hex fields separated by '-' and enclosed in
+    curly braces, i.e., "{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}" where
+    'x' is a hex digit.  From left to right, the five hex fields are
+    obtained from the four public data members in QUuid as follows:
+
+    \table
+    \header
+    \o Field #
+    \o Source
+    
+    \row
+    \o 1
+    \o data1
+    
+    \row
+    \o 2
+    \o data2
+    
+    \row
+    \o 3
+    \o data3
+    
+    \row
+    \o 4
+    \o data4[0] .. data4[1]
+    
+    \row
+    \o 5
+    \o data4[2] .. data4[7]
+
+    \endtable
+*/
+QString QUuid::toString() const
+{
+    QString result;
+
+    QChar dash = QLatin1Char('-');
+    result = QLatin1Char('{') + uuidhex(data1,8);
+    result += dash;
+    result += uuidhex(data2,4);
+    result += dash;
+    result += uuidhex(data3,4);
+    result += dash;
+    result += uuidhex(data4[0],2);
+    result += uuidhex(data4[1],2);
+    result += dash;
+    for (int i = 2; i < 8; i++)
+        result += uuidhex(data4[i],2);
+
+    return result + QLatin1Char('}');
+}
+#endif
+
+#ifndef QT_NO_DATASTREAM
+/*!
+    \relates QUuid
+    Writes the UUID \a id to the data stream \a s.
+*/
+QDataStream &operator<<(QDataStream &s, const QUuid &id)
+{
+    s << (quint32)id.data1;
+    s << (quint16)id.data2;
+    s << (quint16)id.data3;
+    for (int i = 0; i < 8; i++)
+        s << (quint8)id.data4[i];
+    return s;
+}
+
+/*!
+    \relates QUuid
+    Reads a UUID from the stream \a s into \a id.
+*/
+QDataStream &operator>>(QDataStream &s, QUuid &id)
+{
+    quint32 u32;
+    quint16 u16;
+    quint8 u8;
+    s >> u32;
+    id.data1 = u32;
+    s >> u16;
+    id.data2 = u16;
+    s >> u16;
+    id.data3 = u16;
+    for (int i = 0; i < 8; i++) {
+        s >> u8;
+        id.data4[i] = u8;
+    }
+    return s;
+}
+#endif
+
+/*!
+    Returns true if this is the null UUID
+    {00000000-0000-0000-0000-000000000000}; otherwise returns false.
+*/
+bool QUuid::isNull() const
+{
+    return data4[0] == 0 && data4[1] == 0 && data4[2] == 0 && data4[3] == 0 &&
+           data4[4] == 0 && data4[5] == 0 && data4[6] == 0 && data4[7] == 0 &&
+           data1 == 0 && data2 == 0 && data3 == 0;
+}
+
+/*!
+    \enum QUuid::Variant
+
+    This enum defines the values used in the \l{Variant field}
+    {variant field} of the UUID. The value in the variant field
+    determines the layout of the 128-bit value.
+
+    \value VarUnknown Variant is unknown
+    \value NCS Reserved for NCS (Network Computing System) backward compatibility
+    \value DCE Distributed Computing Environment, the scheme used by QUuid
+    \value Microsoft Reserved for Microsoft backward compatibility (GUID)
+    \value Reserved Reserved for future definition
+*/
+
+/*!
+    \enum QUuid::Version
+
+    This enum defines the values used in the \l{Version field}
+    {version field} of the UUID. The version field is meaningful
+    only if the value in the \l{Variant field} {variant field}
+    is QUuid::DCE.
+
+    \value VerUnknown Version is unknown
+    \value Time Time-based, by using timestamp, clock sequence, and
+    MAC network card address (if available) for the node sections
+    \value EmbeddedPOSIX DCE Security version, with embedded POSIX UUIDs
+    \value Name Name-based, by using values from a name for all sections
+    \value Random Random-based, by using random numbers for all sections
+*/
+
+/*!
+    \fn QUuid::Variant QUuid::variant() const
+
+    Returns the value in the \l{Variant field} {variant field} of the
+    UUID. If the return value is QUuid::DCE, call version() to see
+    which layout it uses. The null UUID is considered to be of an
+    unknown variant.
+
+    \sa version()
+*/
+QUuid::Variant QUuid::variant() const
+{
+    if (isNull())
+        return VarUnknown;
+    // Check the 3 MSB of data4[0]
+    if ((data4[0] & 0x80) == 0x00) return NCS;
+    else if ((data4[0] & 0xC0) == 0x80) return DCE;
+    else if ((data4[0] & 0xE0) == 0xC0) return Microsoft;
+    else if ((data4[0] & 0xE0) == 0xE0) return Reserved;
+    return VarUnknown;
+}
+
+/*!
+    \fn QUuid::Version QUuid::version() const
+
+    Returns the \l{Version field} {version field} of the UUID, if the
+    UUID's \l{Variant field} {variant field} is QUuid::DCE. Otherwise
+    it returns QUuid::VerUnknown.
+
+    \sa variant()
+*/
+QUuid::Version QUuid::version() const
+{
+    // Check the 4 MSB of data3
+    Version ver = (Version)(data3>>12);
+    if (isNull()
+         || (variant() != DCE)
+         || ver < Time
+         || ver > Random)
+        return VerUnknown;
+    return ver;
+}
+
+/*!
+    \fn bool QUuid::operator<(const QUuid &other) const
+
+    Returns true if this QUuid has the same \l{Variant field}
+    {variant field} as the \a other QUuid and is lexicographically
+    \e{before} the \a other QUuid. If the \a other QUuid has a
+    different variant field, the return value is determined by
+    comparing the two \l{QUuid::Variant} {variants}.
+
+    \sa variant()
+*/
+#define ISLESS(f1, f2) if (f1!=f2) return (f1<f2);
+bool QUuid::operator<(const QUuid &other) const
+{
+    if (variant() != other.variant())
+        return variant() < other.variant();
+
+    ISLESS(data1, other.data1);
+    ISLESS(data2, other.data2);
+    ISLESS(data3, other.data3);
+    for (int n = 0; n < 8; n++) {
+        ISLESS(data4[n], other.data4[n]);
+    }
+    return false;
+}
+
+/*!
+    \fn bool QUuid::operator>(const QUuid &other) const
+
+    Returns true if this QUuid has the same \l{Variant field}
+    {variant field} as the \a other QUuid and is lexicographically
+    \e{after} the \a other QUuid. If the \a other QUuid has a
+    different variant field, the return value is determined by
+    comparing the two \l{QUuid::Variant} {variants}.
+
+    \sa variant()
+*/
+#define ISMORE(f1, f2) if (f1!=f2) return (f1>f2);
+bool QUuid::operator>(const QUuid &other) const
+{
+    if (variant() != other.variant())
+        return variant() > other.variant();
+
+    ISMORE(data1, other.data1);
+    ISMORE(data2, other.data2);
+    ISMORE(data3, other.data3);
+    for (int n = 0; n < 8; n++) {
+        ISMORE(data4[n], other.data4[n]);
+    }
+    return false;
+}
+
+/*!
+    \fn QUuid QUuid::createUuid()
+
+    On any platform other than Windows, this function returns a new
+    UUID with variant QUuid::DCE and version QUuid::Random. The random
+    numbers used to construct the UUID are obtained from the local
+    pseudo-random generator, which is usually not a cryptographic
+    quality random number generator. Therefore, a UUID generated by
+    this function can't be guaranteed to be unique.
+
+    On a Windows platform, a GUID is generated, which almost certainly
+    \e{will} be unique, on this or any other system, networked or not.
+
+    \sa variant(), version()
+*/
+#if defined(Q_OS_WIN32)
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include <objbase.h> // For CoCreateGuid
+QT_END_INCLUDE_NAMESPACE
+
+QUuid QUuid::createUuid()
+{
+    GUID guid;
+    CoCreateGuid(&guid);
+    QUuid result = guid;
+    return result;
+}
+
+#else // !Q_OS_WIN32
+
+QT_BEGIN_INCLUDE_NAMESPACE
+#include "qdatetime.h"
+#include "stdlib.h" // For srand/rand
+QT_END_INCLUDE_NAMESPACE
+
+QUuid QUuid::createUuid()
+{
+    static const int intbits = sizeof(int)*8;
+    static int randbits = 0;
+    if (!randbits) {
+        int max = RAND_MAX;
+        do { ++randbits; } while ((max=max>>1));
+        qsrand((uint)QDateTime::currentDateTime().toTime_t());
+        qrand(); // Skip first
+    }
+
+    QUuid result;
+    uint *data = &(result.data1);
+    int chunks = 16 / sizeof(uint);
+    while (chunks--) {
+        uint randNumber = 0;
+        for (int filled = 0; filled < intbits; filled += randbits)
+            randNumber |= qrand()<<filled;
+         *(data+chunks) = randNumber;
+    }
+
+    result.data4[0] = (result.data4[0] & 0x3F) | 0x80;        // UV_DCE
+    result.data3 = (result.data3 & 0x0FFF) | 0x4000;        // UV_Random
+
+    return result;
+}
+#endif // !Q_OS_WIN32
+
+/*!
+    \fn bool QUuid::operator==(const GUID &guid) const
+
+    Returns true if this UUID is equal to the Windows GUID \a guid;
+    otherwise returns false.
+*/
+
+/*!
+    \fn bool QUuid::operator!=(const GUID &guid) const
+
+    Returns true if this UUID is not equal to the Windows GUID \a
+    guid; otherwise returns false.
+*/
+
+QT_END_NAMESPACE
diff --git a/src/corelib/plugin/quuid.h b/src/corelib/plugin/quuid.h
new file mode 100644
index 0000000000..95716d46a8
--- /dev/null
+++ b/src/corelib/plugin/quuid.h
@@ -0,0 +1,190 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, 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 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QUUID_H
+#define QUUID_H
+
+#include <QtCore/qstring.h>
+
+QT_BEGIN_HEADER
+
+#if defined(Q_OS_WIN)
+#ifndef GUID_DEFINED
+#define GUID_DEFINED
+typedef struct _GUID
+{
+    ulong   Data1;
+    ushort  Data2;
+    ushort  Data3;
+    uchar   Data4[8];
+} GUID, *REFGUID, *LPGUID;
+#endif
+#endif
+
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Core)
+
+struct Q_CORE_EXPORT QUuid
+{
+    enum Variant {
+        VarUnknown        =-1,
+        NCS                = 0, // 0 - -
+        DCE                = 2, // 1 0 -
+        Microsoft        = 6, // 1 1 0
+        Reserved        = 7  // 1 1 1
+    };
+
+    enum Version {
+        VerUnknown        =-1,
+        Time                = 1, // 0 0 0 1
+        EmbeddedPOSIX        = 2, // 0 0 1 0
+        Name                = 3, // 0 0 1 1
+        Random                = 4  // 0 1 0 0
+    };
+
+    QUuid()
+    {
+        data1 = 0;
+        data2 = 0;
+        data3 = 0;
+        for(int i = 0; i < 8; i++)
+            data4[i] = 0;
+    }
+    QUuid(uint l, ushort w1, ushort w2, uchar b1, uchar b2, uchar b3, uchar b4, uchar b5, uchar b6, uchar b7, uchar b8)
+    {
+        data1 = l;
+        data2 = w1;
+        data3 = w2;
+        data4[0] = b1;
+        data4[1] = b2;
+        data4[2] = b3;
+        data4[3] = b4;
+        data4[4] = b5;
+        data4[5] = b6;
+        data4[6] = b7;
+        data4[7] = b8;
+    }
+#ifndef QT_NO_QUUID_STRING
+    QUuid(const QString &);
+    QUuid(const char *);
+    QString toString() const;
+    operator QString() const { return toString(); }
+#endif
+    bool isNull() const;
+
+    bool operator==(const QUuid &orig) const
+    {
+        uint i;
+        if (data1 != orig.data1 || data2 != orig.data2 ||
+             data3 != orig.data3)
+            return false;
+
+        for(i = 0; i < 8; i++)
+            if (data4[i] != orig.data4[i])
+                return false;
+
+        return true;
+    }
+
+    bool operator!=(const QUuid &orig) const
+    {
+        return !(*this == orig);
+    }
+
+    bool operator<(const QUuid &other) const;
+    bool operator>(const QUuid &other) const;
+
+#if defined(Q_OS_WIN)
+    // On Windows we have a type GUID that is used by the platform API, so we
+    // provide convenience operators to cast from and to this type.
+    QUuid(const GUID &guid)
+    {
+        data1 = guid.Data1;
+        data2 = guid.Data2;
+        data3 = guid.Data3;
+        for(int i = 0; i < 8; i++)
+            data4[i] = guid.Data4[i];
+    }
+
+    QUuid &operator=(const GUID &guid)
+    {
+        *this = QUuid(guid);
+        return *this;
+    }
+
+    operator GUID() const
+    {
+        GUID guid = { data1, data2, data3, { data4[0], data4[1], data4[2], data4[3], data4[4], data4[5], data4[6], data4[7] } };
+        return guid;
+    }
+
+    bool operator==(const GUID &guid) const
+    {
+        return *this == QUuid(guid);
+    }
+
+    bool operator!=(const GUID &guid) const
+    {
+        return !(*this == guid);
+    }
+#endif
+    static QUuid createUuid();
+    QUuid::Variant variant() const;
+    QUuid::Version version() const;
+
+    uint    data1;
+    ushort  data2;
+    ushort  data3;
+    uchar   data4[8];
+};
+
+#ifndef QT_NO_DATASTREAM
+Q_CORE_EXPORT QDataStream &operator<<(QDataStream &, const QUuid &);
+Q_CORE_EXPORT QDataStream &operator>>(QDataStream &, QUuid &);
+#endif
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QUUID_H