Long live Qt 4.5!

1 files changed, 669 insertions, 0 deletions

diff --git a/src/gui/kernel/qguivariant.cpp b/src/gui/kernel/qguivariant.cpp
new file mode 100644
index 0000000..7ad908f
--- /dev/null
+++ b/src/gui/kernel/qguivariant.cpp
@@ -0,0 +1,669 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui 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 "qvariant.h"
+
+#include "qbitmap.h"
+#include "qbrush.h"
+#include "qcolor.h"
+#include "qcursor.h"
+#include "qdatastream.h"
+#include "qdebug.h"
+#include "qfont.h"
+#include "qicon.h"
+#include "qimage.h"
+#include "qkeysequence.h"
+#include "qtransform.h"
+#include "qmatrix.h"
+#include "qpalette.h"
+#include "qpen.h"
+#include "qpixmap.h"
+#include "qpolygon.h"
+#include "qregion.h"
+#include "qsizepolicy.h"
+#include "qtextformat.h"
+
+#include "private/qvariant_p.h"
+
+QT_BEGIN_NAMESPACE
+
+#ifdef QT3_SUPPORT
+extern QDataStream &qt_stream_out_qcolorgroup(QDataStream &s, const QColorGroup &g);
+extern QDataStream &qt_stream_in_qcolorgroup(QDataStream &s, QColorGroup &g);
+#endif
+
+Q_CORE_EXPORT const QVariant::Handler *qcoreVariantHandler();
+
+static void construct(QVariant::Private *x, const void *copy)
+{
+    switch (x->type) {
+    case QVariant::Bitmap:
+        v_construct<QBitmap>(x, copy);
+        break;
+    case QVariant::Region:
+        v_construct<QRegion>(x, copy);
+        break;
+    case QVariant::Polygon:
+        v_construct<QPolygon>(x, copy);
+        break;
+    case QVariant::Font:
+        v_construct<QFont>(x, copy);
+        break;
+    case QVariant::Pixmap:
+        v_construct<QPixmap>(x, copy);
+        break;
+    case QVariant::Image:
+        v_construct<QImage>(x, copy);
+        break;
+    case QVariant::Brush:
+        v_construct<QBrush>(x, copy);
+        break;
+    case QVariant::Color:
+        v_construct<QColor>(x, copy);
+        break;
+    case QVariant::Palette:
+        v_construct<QPalette>(x, copy);
+        break;
+#ifdef QT3_SUPPORT
+    case QVariant::ColorGroup:
+        v_construct<QColorGroup>(x, copy);
+        break;
+#endif
+#ifndef QT_NO_ICON
+    case QVariant::Icon:
+        v_construct<QIcon>(x, copy);
+        break;
+#endif
+    case QVariant::Matrix:
+        v_construct<QMatrix>(x, copy);
+        break;
+    case QVariant::Transform:
+        v_construct<QTransform>(x, copy);
+        break;
+    case QVariant::TextFormat:
+        v_construct<QTextFormat>(x, copy);
+        break;
+    case QVariant::TextLength:
+        v_construct<QTextLength>(x, copy);
+        break;
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence:
+        v_construct<QKeySequence>(x, copy);
+        break;
+#endif
+    case QVariant::Pen:
+        v_construct<QPen>(x, copy);
+        break;
+    case QVariant::SizePolicy:
+        v_construct<QSizePolicy>(x, copy);
+        break;
+#ifndef QT_NO_CURSOR
+    case QVariant::Cursor:
+        v_construct<QCursor>(x, copy);
+        break;
+#endif
+    case 62: {
+        // small 'trick' to let a QVariant(Qt::blue) create a variant
+        // of type QColor
+        x->type = QVariant::Color;
+        QColor color(*reinterpret_cast<const Qt::GlobalColor *>(copy));
+        v_construct<QColor>(x, &color);
+        break;
+    }
+    default:
+        qcoreVariantHandler()->construct(x, copy);
+        return;
+    }
+    x->is_null = !copy;
+}
+
+static void clear(QVariant::Private *d)
+{
+    switch (d->type) {
+    case QVariant::Bitmap:
+        v_clear<QBitmap>(d);
+        break;
+    case QVariant::Cursor:
+        v_clear<QCursor>(d);
+        break;
+    case QVariant::Region:
+        v_clear<QRegion>(d);
+        break;
+    case QVariant::Polygon:
+        v_clear<QPolygon>(d);
+        break;
+    case QVariant::Font:
+        v_clear<QFont>(d);
+        break;
+    case QVariant::Pixmap:
+        v_clear<QPixmap>(d);
+        break;
+    case QVariant::Image:
+        v_clear<QImage>(d);
+        break;
+    case QVariant::Brush:
+        v_clear<QBrush>(d);
+        break;
+    case QVariant::Color:
+        v_clear<QColor>(d);
+        break;
+    case QVariant::Palette:
+        v_clear<QPalette>(d);
+        break;
+#ifdef QT3_SUPPORT
+    case QVariant::ColorGroup:
+        v_clear<QColorGroup>(d);
+        break;
+#endif
+#ifndef QT_NO_ICON
+    case QVariant::Icon:
+        v_clear<QIcon>(d);
+        break;
+#endif
+    case QVariant::Matrix:
+        v_clear<QMatrix>(d);
+        break;
+    case QVariant::Transform:
+        v_clear<QTransform>(d);
+        break;
+    case QVariant::TextFormat:
+        v_clear<QTextFormat>(d);
+        break;
+    case QVariant::TextLength:
+        v_clear<QTextLength>(d);
+        break;
+    case QVariant::SizePolicy:
+        v_clear<QSizePolicy>(d);
+        break;
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence:
+        v_clear<QKeySequence>(d);
+        break;
+#endif
+    case QVariant::Pen:
+        v_clear<QPen>(d);
+        break;
+    default:
+        qcoreVariantHandler()->clear(d);
+        return;
+    }
+
+    d->type = QVariant::Invalid;
+    d->is_null = true;
+    d->is_shared = false;
+}
+
+
+static bool isNull(const QVariant::Private *d)
+{
+    switch(d->type) {
+    case QVariant::Bitmap:
+        return v_cast<QBitmap>(d)->isNull();
+    case QVariant::Region:
+        return v_cast<QRegion>(d)->isEmpty();
+    case QVariant::Polygon:
+        return v_cast<QPolygon>(d)->isEmpty();
+    case QVariant::Pixmap:
+        return v_cast<QPixmap>(d)->isNull();
+    case QVariant::Image:
+        return v_cast<QImage>(d)->isNull();
+#ifndef QT_NO_ICON
+    case QVariant::Icon:
+        return v_cast<QIcon>(d)->isNull();
+#endif
+    case QVariant::Matrix:
+    case QVariant::TextFormat:
+    case QVariant::TextLength:
+    case QVariant::Cursor:
+    case QVariant::StringList:
+    case QVariant::Font:
+    case QVariant::Brush:
+    case QVariant::Color:
+    case QVariant::Palette:
+#ifdef QT3_SUPPORT
+    case QVariant::ColorGroup:
+#endif
+    case QVariant::SizePolicy:
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence:
+#endif
+    case QVariant::Pen:
+        break;
+    default:
+        return qcoreVariantHandler()->isNull(d);
+    }
+    return d->is_null;
+}
+
+static bool compare(const QVariant::Private *a, const QVariant::Private *b)
+{
+    Q_ASSERT(a->type == b->type);
+    switch(a->type) {
+    case QVariant::Cursor:
+#ifndef QT_NO_CURSOR
+        return v_cast<QCursor>(a)->shape() == v_cast<QCursor>(b)->shape();
+#endif
+    case QVariant::Bitmap:
+        return v_cast<QBitmap>(a)->cacheKey()
+            == v_cast<QBitmap>(b)->cacheKey();
+    case QVariant::Polygon:
+        return *v_cast<QPolygon>(a) == *v_cast<QPolygon>(b);
+    case QVariant::Region:
+        return *v_cast<QRegion>(a) == *v_cast<QRegion>(b);
+    case QVariant::Font:
+        return *v_cast<QFont>(a) == *v_cast<QFont>(b);
+    case QVariant::Pixmap:
+        return v_cast<QPixmap>(a)->cacheKey() == v_cast<QPixmap>(b)->cacheKey();
+    case QVariant::Image:
+        return *v_cast<QImage>(a) == *v_cast<QImage>(b);
+    case QVariant::Brush:
+        return *v_cast<QBrush>(a) == *v_cast<QBrush>(b);
+    case QVariant::Color:
+        return *v_cast<QColor>(a) == *v_cast<QColor>(b);
+    case QVariant::Palette:
+        return *v_cast<QPalette>(a) == *v_cast<QPalette>(b);
+#ifdef QT3_SUPPORT
+    case QVariant::ColorGroup:
+        return *v_cast<QColorGroup>(a) == *v_cast<QColorGroup>(b);
+#endif
+#ifndef QT_NO_ICON
+    case QVariant::Icon:
+        /* QIcon::operator==() cannot be reasonably implemented for QIcon,
+         * so we always return false. */
+        return false;
+#endif
+    case QVariant::Matrix:
+        return *v_cast<QMatrix>(a) == *v_cast<QMatrix>(b);
+    case QVariant::Transform:
+        return *v_cast<QTransform>(a) == *v_cast<QTransform>(b);
+    case QVariant::TextFormat:
+        return *v_cast<QTextFormat>(a) == *v_cast<QTextFormat>(b);
+    case QVariant::TextLength:
+        return *v_cast<QTextLength>(a) == *v_cast<QTextLength>(b);
+    case QVariant::SizePolicy:
+        return *v_cast<QSizePolicy>(a) == *v_cast<QSizePolicy>(b);
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence:
+        return *v_cast<QKeySequence>(a) == *v_cast<QKeySequence>(b);
+#endif
+    case QVariant::Pen:
+        return *v_cast<QPen>(a) == *v_cast<QPen>(b);
+    default:
+        break;
+    }
+    return qcoreVariantHandler()->compare(a, b);
+}
+
+
+
+static bool convert(const QVariant::Private *d, QVariant::Type t,
+                 void *result, bool *ok)
+{
+    switch (t) {
+    case QVariant::ByteArray:
+        if (d->type == QVariant::Color) {
+            *static_cast<QByteArray *>(result) = v_cast<QColor>(d)->name().toLatin1();
+            return true;
+        }
+        break;
+    case QVariant::String: {
+        QString *str = static_cast<QString *>(result);
+        switch (d->type) {
+#ifndef QT_NO_SHORTCUT
+        case QVariant::KeySequence:
+            *str = QString(*v_cast<QKeySequence>(d));
+            return true;
+#endif
+        case QVariant::Font:
+            *str = v_cast<QFont>(d)->toString();
+            return true;
+        case QVariant::Color:
+            *str = v_cast<QColor>(d)->name();
+            return true;
+        default:
+            break;
+        }
+        break;
+    }
+    case QVariant::Pixmap:
+        if (d->type == QVariant::Image) {
+            *static_cast<QPixmap *>(result) = QPixmap::fromImage(*v_cast<QImage>(d));
+            return true;
+        } else if (d->type == QVariant::Bitmap) {
+            *static_cast<QPixmap *>(result) = *v_cast<QBitmap>(d);
+            return true;
+        } else if (d->type == QVariant::Brush) {
+            if (v_cast<QBrush>(d)->style() == Qt::TexturePattern) {
+                *static_cast<QPixmap *>(result) = v_cast<QBrush>(d)->texture();
+                return true;
+            }
+        }
+        break;
+    case QVariant::Image:
+        if (d->type == QVariant::Pixmap) {
+            *static_cast<QImage *>(result) = v_cast<QPixmap>(d)->toImage();
+            return true;
+        } else if (d->type == QVariant::Bitmap) {
+            *static_cast<QImage *>(result) = v_cast<QBitmap>(d)->toImage();
+            return true;
+        }
+        break;
+    case QVariant::Bitmap:
+        if (d->type == QVariant::Pixmap) {
+            *static_cast<QBitmap *>(result) = *v_cast<QPixmap>(d);
+            return true;
+        } else if (d->type == QVariant::Image) {
+            *static_cast<QBitmap *>(result) = QBitmap::fromImage(*v_cast<QImage>(d));
+            return true;
+        }
+        break;
+#ifndef QT_NO_SHORTCUT
+    case QVariant::Int:
+        if (d->type == QVariant::KeySequence) {
+            *static_cast<int *>(result) = (int)(*(v_cast<QKeySequence>(d)));
+            return true;
+        }
+        break;
+#endif
+    case QVariant::Font:
+        if (d->type == QVariant::String) {
+            QFont *f = static_cast<QFont *>(result);
+            f->fromString(*v_cast<QString>(d));
+            return true;
+        }
+        break;
+    case QVariant::Color:
+        if (d->type == QVariant::String) {
+            static_cast<QColor *>(result)->setNamedColor(*v_cast<QString>(d));
+            return static_cast<QColor *>(result)->isValid();
+        } else if (d->type == QVariant::ByteArray) {
+            static_cast<QColor *>(result)->setNamedColor(QString::fromLatin1(
+                                *v_cast<QByteArray>(d)));
+            return true;
+        } else if (d->type == QVariant::Brush) {
+            if (v_cast<QBrush>(d)->style() == Qt::SolidPattern) {
+                *static_cast<QColor *>(result) = v_cast<QBrush>(d)->color();
+                return true;
+            }
+        }
+        break;
+    case QVariant::Brush:
+        if (d->type == QVariant::Color) {
+            *static_cast<QBrush *>(result) = QBrush(*v_cast<QColor>(d));
+            return true;
+        } else if (d->type == QVariant::Pixmap) {
+            *static_cast<QBrush *>(result) = QBrush(*v_cast<QPixmap>(d));
+            return true;
+        }
+        break;
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence: {
+        QKeySequence *seq = static_cast<QKeySequence *>(result);
+        switch (d->type) {
+        case QVariant::String:
+            *seq = QKeySequence(*v_cast<QString>(d));
+            return true;
+        case QVariant::Int:
+            *seq = QKeySequence(d->data.i);
+            return true;
+        default:
+            break;
+        }
+    }
+#endif
+    default:
+        break;
+    }
+    return qcoreVariantHandler()->convert(d, t, result, ok);
+}
+
+#if !defined(QT_NO_DEBUG_STREAM) && !defined(Q_BROKEN_DEBUG_STREAM)
+static void streamDebug(QDebug dbg, const QVariant &v)
+{
+    switch(v.type()) {
+    case QVariant::Cursor:
+#ifndef QT_NO_CURSOR
+//        dbg.nospace() << qvariant_cast<QCursor>(v); //FIXME
+#endif
+        break;
+    case QVariant::Bitmap:
+//        dbg.nospace() << qvariant_cast<QBitmap>(v); //FIXME
+        break;
+    case QVariant::Polygon:
+        dbg.nospace() << qvariant_cast<QPolygon>(v);
+        break;
+    case QVariant::Region:
+        dbg.nospace() << qvariant_cast<QRegion>(v);
+        break;
+    case QVariant::Font:
+//        dbg.nospace() << qvariant_cast<QFont>(v);  //FIXME
+        break;
+    case QVariant::Matrix:
+        dbg.nospace() << qvariant_cast<QMatrix>(v);
+        break;
+    case QVariant::Transform:
+        dbg.nospace() << qvariant_cast<QTransform>(v);
+        break;
+    case QVariant::Pixmap:
+//        dbg.nospace() << qvariant_cast<QPixmap>(v); //FIXME
+        break;
+    case QVariant::Image:
+//        dbg.nospace() << qvariant_cast<QImage>(v); //FIXME
+        break;
+    case QVariant::Brush:
+        dbg.nospace() << qvariant_cast<QBrush>(v);
+        break;
+    case QVariant::Color:
+        dbg.nospace() << qvariant_cast<QColor>(v);
+        break;
+    case QVariant::Palette:
+//        dbg.nospace() << qvariant_cast<QPalette>(v); //FIXME
+        break;
+#ifndef QT_NO_ICON
+    case QVariant::Icon:
+//        dbg.nospace() << qvariant_cast<QIcon>(v); // FIXME
+        break;
+#endif
+    case QVariant::SizePolicy:
+//        dbg.nospace() << qvariant_cast<QSizePolicy>(v); //FIXME
+        break;
+#ifndef QT_NO_SHORTCUT
+    case QVariant::KeySequence:
+        dbg.nospace() << qvariant_cast<QKeySequence>(v);
+        break;
+#endif
+    case QVariant::Pen:
+        dbg.nospace() << qvariant_cast<QPen>(v);
+        break;
+    default:
+        qcoreVariantHandler()->debugStream(dbg, v);
+        break;
+    }
+}
+#endif
+
+const QVariant::Handler qt_gui_variant_handler = {
+    construct,
+    clear,
+    isNull,
+#ifndef QT_NO_DATASTREAM
+    0,
+    0,
+#endif
+    compare,
+    convert,
+    0,
+#if !defined(QT_NO_DEBUG_STREAM) && !defined(Q_BROKEN_DEBUG_STREAM)
+    streamDebug
+#else
+    0
+#endif
+};
+
+struct QMetaTypeGuiHelper
+{
+    QMetaType::Constructor constr;
+    QMetaType::Destructor destr;
+#ifndef QT_NO_DATASTREAM
+    QMetaType::SaveOperator saveOp;
+    QMetaType::LoadOperator loadOp;
+#endif
+};
+
+extern Q_CORE_EXPORT const QMetaTypeGuiHelper *qMetaTypeGuiHelper;
+
+
+#ifdef QT_NO_DATASTREAM
+#  define Q_DECL_METATYPE_HELPER(TYPE) \
+     typedef void *(*QConstruct##TYPE)(const TYPE *); \
+     static const QConstruct##TYPE qConstruct##TYPE = qMetaTypeConstructHelper<TYPE>; \
+     typedef void (*QDestruct##TYPE)(TYPE *); \
+     static const QDestruct##TYPE qDestruct##TYPE = qMetaTypeDeleteHelper<TYPE>;
+#else
+#  define Q_DECL_METATYPE_HELPER(TYPE) \
+     typedef void *(*QConstruct##TYPE)(const TYPE *); \
+     static const QConstruct##TYPE qConstruct##TYPE = qMetaTypeConstructHelper<TYPE>; \
+     typedef void (*QDestruct##TYPE)(TYPE *); \
+     static const QDestruct##TYPE qDestruct##TYPE = qMetaTypeDeleteHelper<TYPE>; \
+     typedef void (*QSave##TYPE)(QDataStream &, const TYPE *); \
+     static const QSave##TYPE qSave##TYPE = qMetaTypeSaveHelper<TYPE>; \
+     typedef void (*QLoad##TYPE)(QDataStream &, TYPE *); \
+     static const QLoad##TYPE qLoad##TYPE = qMetaTypeLoadHelper<TYPE>;
+#endif
+
+#ifdef QT3_SUPPORT
+Q_DECL_METATYPE_HELPER(QColorGroup)
+#endif
+Q_DECL_METATYPE_HELPER(QFont)
+Q_DECL_METATYPE_HELPER(QPixmap)
+Q_DECL_METATYPE_HELPER(QBrush)
+Q_DECL_METATYPE_HELPER(QColor)
+Q_DECL_METATYPE_HELPER(QPalette)
+#ifndef QT_NO_ICON
+Q_DECL_METATYPE_HELPER(QIcon)
+#endif
+Q_DECL_METATYPE_HELPER(QImage)
+Q_DECL_METATYPE_HELPER(QPolygon)
+Q_DECL_METATYPE_HELPER(QRegion)
+Q_DECL_METATYPE_HELPER(QBitmap)
+#ifndef QT_NO_CURSOR
+Q_DECL_METATYPE_HELPER(QCursor)
+#endif
+Q_DECL_METATYPE_HELPER(QSizePolicy)
+#ifndef QT_NO_SHORTCUT
+Q_DECL_METATYPE_HELPER(QKeySequence)
+#endif
+Q_DECL_METATYPE_HELPER(QPen)
+Q_DECL_METATYPE_HELPER(QTextLength)
+Q_DECL_METATYPE_HELPER(QTextFormat)
+Q_DECL_METATYPE_HELPER(QMatrix)
+Q_DECL_METATYPE_HELPER(QTransform)
+
+#ifdef QT_NO_DATASTREAM
+#  define Q_IMPL_METATYPE_HELPER(TYPE) \
+     { reinterpret_cast<QMetaType::Constructor>(qConstruct##TYPE), \
+       reinterpret_cast<QMetaType::Destructor>(qDestruct##TYPE) }
+#else
+#  define Q_IMPL_METATYPE_HELPER(TYPE) \
+     { reinterpret_cast<QMetaType::Constructor>(qConstruct##TYPE), \
+       reinterpret_cast<QMetaType::Destructor>(qDestruct##TYPE), \
+       reinterpret_cast<QMetaType::SaveOperator>(qSave##TYPE), \
+       reinterpret_cast<QMetaType::LoadOperator>(qLoad##TYPE) \
+     }
+#endif
+
+static const QMetaTypeGuiHelper qVariantGuiHelper[] = {
+#ifdef QT3_SUPPORT
+    Q_IMPL_METATYPE_HELPER(QColorGroup),
+#else
+    {0, 0, 0, 0},
+#endif
+    Q_IMPL_METATYPE_HELPER(QFont),
+    Q_IMPL_METATYPE_HELPER(QPixmap),
+    Q_IMPL_METATYPE_HELPER(QBrush),
+    Q_IMPL_METATYPE_HELPER(QColor),
+    Q_IMPL_METATYPE_HELPER(QPalette),
+#ifdef QT_NO_ICON
+    {0, 0, 0, 0},
+#else
+    Q_IMPL_METATYPE_HELPER(QIcon),
+#endif
+    Q_IMPL_METATYPE_HELPER(QImage),
+    Q_IMPL_METATYPE_HELPER(QPolygon),
+    Q_IMPL_METATYPE_HELPER(QRegion),
+    Q_IMPL_METATYPE_HELPER(QBitmap),
+#ifdef QT_NO_CURSOR
+    {0, 0, 0, 0},
+#else
+    Q_IMPL_METATYPE_HELPER(QCursor),
+#endif
+    Q_IMPL_METATYPE_HELPER(QSizePolicy),
+#ifdef QT_NO_SHORTCUT
+    {0, 0, 0, 0},
+#else
+    Q_IMPL_METATYPE_HELPER(QKeySequence),
+#endif
+    Q_IMPL_METATYPE_HELPER(QPen),
+    Q_IMPL_METATYPE_HELPER(QTextLength),
+    Q_IMPL_METATYPE_HELPER(QTextFormat),
+    Q_IMPL_METATYPE_HELPER(QMatrix),
+    Q_IMPL_METATYPE_HELPER(QTransform)
+};
+
+static const QVariant::Handler *qt_guivariant_last_handler = 0;
+int qRegisterGuiVariant()
+{
+    qt_guivariant_last_handler = QVariant::handler;
+    QVariant::handler = &qt_gui_variant_handler;
+    qMetaTypeGuiHelper = qVariantGuiHelper;
+    return 1;
+}
+Q_CONSTRUCTOR_FUNCTION(qRegisterGuiVariant)
+
+int qUnregisterGuiVariant()
+{
+    QVariant::handler = qt_guivariant_last_handler;
+    qMetaTypeGuiHelper = 0;
+    return 1;
+}
+Q_DESTRUCTOR_FUNCTION(qUnregisterGuiVariant)
+
+QT_END_NAMESPACE