qobject.h

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/****************************************************************************
**
** Copyright (C) 2020 The Qt Company Ltd.
** Copyright (C) 2013 Olivier Goffart <ogoffart@woboq.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** Alternatively, this file may be used under the terms of the GNU
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** $QT_END_LICENSE$
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****************************************************************************/
 
#ifndef QOBJECT_H
#define QOBJECT_H
 
#ifndef QT_NO_QOBJECT
 
#include <QtCore/qobjectdefs.h>
#include <QtCore/qstring.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qlist.h>
#ifdef QT_INCLUDE_COMPAT
#include <QtCore/qcoreevent.h>
#endif
#include <QtCore/qscopedpointer.h>
#include <QtCore/qmetatype.h>
 
#include <QtCore/qobject_impl.h>
#include <QtCore/qbindingstorage.h>
 
#if __has_include(<chrono>)
#  include <chrono>
#endif
 
QT_BEGIN_NAMESPACE
 
 
template <typename T> class QBindable;
class QEvent;
class QTimerEvent;
class QChildEvent;
struct QMetaObject;
class QVariant;
class QObjectPrivate;
class QObject;
class QThread;
class QWidget;
class QAccessibleWidget;
#if QT_CONFIG(regularexpression)
class QRegularExpression;
#endif
struct QDynamicMetaObjectData;
 
typedef QList<QObject*> QObjectList;
 
Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QString &name,
                                           const QMetaObject &mo, QList<void *> *list, Qt::FindChildOptions options);
Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QMetaObject &mo,
                                           QList<void *> *list, Qt::FindChildOptions options);
Q_CORE_EXPORT void qt_qFindChildren_helper(const QObject *parent, const QRegularExpression &re,
                                           const QMetaObject &mo, QList<void *> *list, Qt::FindChildOptions options);
Q_CORE_EXPORT QObject *qt_qFindChild_helper(const QObject *parent, const QString &name, const QMetaObject &mo, Qt::FindChildOptions options);
 
class Q_CORE_EXPORT QObjectData
{
    Q_DISABLE_COPY(QObjectData)
public:
    QObjectData() = default;
    virtual ~QObjectData() = 0;
    QObject *q_ptr;
    QObject *parent;
    QObjectList children;
 
    uint isWidget : 1;
    uint blockSig : 1;
    uint wasDeleted : 1;
    uint isDeletingChildren : 1;
    uint sendChildEvents : 1;
    uint receiveChildEvents : 1;
    uint isWindow : 1; // for QWindow
    uint deleteLaterCalled : 1;
    uint unused : 24;
    int postedEvents;
    QDynamicMetaObjectData *metaObject;
    QBindingStorage bindingStorage;
 
    // ### Qt7: Make this return a const QMetaObject *. You should not mess with
    //          the metaobjects of existing objects.
    QMetaObject *dynamicMetaObject() const;
 
#ifdef QT_DEBUG
    enum { CheckForParentChildLoopsWarnDepth = 4096 };
#endif
};
 
class Q_CORE_EXPORT QObject
{
    Q_OBJECT
 
    Q_PROPERTY(QString objectName READ objectName WRITE setObjectName NOTIFY objectNameChanged
               BINDABLE bindableObjectName)
    Q_DECLARE_PRIVATE(QObject)
 
public:
    Q_INVOKABLE explicit QObject(QObject *parent = nullptr);
    virtual ~QObject();
 
    virtual bool event(QEvent *event);
    virtual bool eventFilter(QObject *watched, QEvent *event);
 
#if defined(QT_NO_TRANSLATION) || defined(Q_CLANG_QDOC)
    static QString tr(const char *sourceText, const char * = nullptr, int = -1)
        { return QString::fromUtf8(sourceText); }
#endif // QT_NO_TRANSLATION
 
    QString objectName() const;
    void setObjectName(const QString &name);
    QBindable<QString> bindableObjectName();
 
    inline bool isWidgetType() const { return d_ptr->isWidget; }
    inline bool isWindowType() const { return d_ptr->isWindow; }
 
    inline bool signalsBlocked() const noexcept { return d_ptr->blockSig; }
    bool blockSignals(bool b) noexcept;
 
    QThread *thread() const;
    void moveToThread(QThread *thread);
 
    int startTimer(int interval, Qt::TimerType timerType = Qt::CoarseTimer);
#if __has_include(<chrono>)
    Q_ALWAYS_INLINE
    int startTimer(std::chrono::milliseconds time, Qt::TimerType timerType = Qt::CoarseTimer)
    {
        return startTimer(int(time.count()), timerType);
    }
#endif
    void killTimer(int id);
 
    template<typename T>
    inline T findChild(const QString &aName = QString(), Qt::FindChildOptions options = Qt::FindChildrenRecursively) const
    {
        typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
        return static_cast<T>(qt_qFindChild_helper(this, aName, ObjType::staticMetaObject, options));
    }
 
    template<typename T>
    inline QList<T> findChildren(const QString &aName, Qt::FindChildOptions options = Qt::FindChildrenRecursively) const
    {
        typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
        QList<T> list;
        qt_qFindChildren_helper(this, aName, ObjType::staticMetaObject,
                                reinterpret_cast<QList<void *> *>(&list), options);
        return list;
    }
 
    template<typename T>
    QList<T> findChildren(Qt::FindChildOptions options = Qt::FindChildrenRecursively) const
    {
        typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
        QList<T> list;
        qt_qFindChildren_helper(this, ObjType::staticMetaObject,
                                reinterpret_cast<QList<void *> *>(&list), options);
        return list;
    }
 
#if QT_CONFIG(regularexpression)
    template<typename T>
    inline QList<T> findChildren(const QRegularExpression &re, Qt::FindChildOptions options = Qt::FindChildrenRecursively) const
    {
        typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
        QList<T> list;
        qt_qFindChildren_helper(this, re, ObjType::staticMetaObject,
                                reinterpret_cast<QList<void *> *>(&list), options);
        return list;
    }
#endif // QT_CONFIG(regularexpression)
 
    inline const QObjectList &children() const { return d_ptr->children; }
 
    void setParent(QObject *parent);
    void installEventFilter(QObject *filterObj);
    void removeEventFilter(QObject *obj);
 
    static QMetaObject::Connection connect(const QObject *sender, const char *signal,
                        const QObject *receiver, const char *member, Qt::ConnectionType = Qt::AutoConnection);
 
    static QMetaObject::Connection connect(const QObject *sender, const QMetaMethod &signal,
                        const QObject *receiver, const QMetaMethod &method,
                        Qt::ConnectionType type = Qt::AutoConnection);
 
    inline QMetaObject::Connection connect(const QObject *sender, const char *signal,
                        const char *member, Qt::ConnectionType type = Qt::AutoConnection) const;
 
#ifdef Q_CLANG_QDOC
    template<typename PointerToMemberFunction>
    static QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method, Qt::ConnectionType type = Qt::AutoConnection);
    template<typename PointerToMemberFunction, typename Functor>
    static QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, Functor functor);
    template<typename PointerToMemberFunction, typename Functor>
    static QMetaObject::Connection connect(const QObject *sender, PointerToMemberFunction signal, const QObject *context, Functor functor, Qt::ConnectionType type = Qt::AutoConnection);
#else
    //Connect a signal to a pointer to qobject member function
    template <typename Func1, typename Func2>
    static inline QMetaObject::Connection connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                     const typename QtPrivate::FunctionPointer<Func2>::Object *receiver, Func2 slot,
                                     Qt::ConnectionType type = Qt::AutoConnection)
    {
        typedef QtPrivate::FunctionPointer<Func1> SignalType;
        typedef QtPrivate::FunctionPointer<Func2> SlotType;
 
        static_assert(QtPrivate::HasQ_OBJECT_Macro<typename SignalType::Object>::Value,
                          "No Q_OBJECT in the class with the signal");
 
        //compilation error if the arguments does not match.
        static_assert(int(SignalType::ArgumentCount) >= int(SlotType::ArgumentCount),
                          "The slot requires more arguments than the signal provides.");
        static_assert((QtPrivate::CheckCompatibleArguments<typename SignalType::Arguments, typename SlotType::Arguments>::value),
                          "Signal and slot arguments are not compatible.");
        static_assert((QtPrivate::AreArgumentsCompatible<typename SlotType::ReturnType, typename SignalType::ReturnType>::value),
                          "Return type of the slot is not compatible with the return type of the signal.");
 
        const int *types = nullptr;
        if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
            types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
        return connectImpl(sender, reinterpret_cast<void **>(&signal),
                           receiver, reinterpret_cast<void **>(&slot),
                           new QtPrivate::QSlotObject<Func2, typename QtPrivate::List_Left<typename SignalType::Arguments, SlotType::ArgumentCount>::Value,
                                           typename SignalType::ReturnType>(slot),
                            type, types, &SignalType::Object::staticMetaObject);
    }
 
    //connect to a function pointer  (not a member)
    template <typename Func1, typename Func2>
    static inline typename std::enable_if<int(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0, QMetaObject::Connection>::type
            connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
    {
        return connect(sender, signal, sender, slot, Qt::DirectConnection);
    }
 
    //connect to a function pointer  (not a member)
    template <typename Func1, typename Func2>
    static inline typename std::enable_if<int(QtPrivate::FunctionPointer<Func2>::ArgumentCount) >= 0 &&
                                          !QtPrivate::FunctionPointer<Func2>::IsPointerToMemberFunction, QMetaObject::Connection>::type
            connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
                    Qt::ConnectionType type = Qt::AutoConnection)
    {
        typedef QtPrivate::FunctionPointer<Func1> SignalType;
        typedef QtPrivate::FunctionPointer<Func2> SlotType;
 
        static_assert(QtPrivate::HasQ_OBJECT_Macro<typename SignalType::Object>::Value,
                          "No Q_OBJECT in the class with the signal");
 
        //compilation error if the arguments does not match.
        static_assert(int(SignalType::ArgumentCount) >= int(SlotType::ArgumentCount),
                          "The slot requires more arguments than the signal provides.");
        static_assert((QtPrivate::CheckCompatibleArguments<typename SignalType::Arguments, typename SlotType::Arguments>::value),
                          "Signal and slot arguments are not compatible.");
        static_assert((QtPrivate::AreArgumentsCompatible<typename SlotType::ReturnType, typename SignalType::ReturnType>::value),
                          "Return type of the slot is not compatible with the return type of the signal.");
 
        const int *types = nullptr;
        if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
            types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, nullptr,
                           new QtPrivate::QStaticSlotObject<Func2,
                                                 typename QtPrivate::List_Left<typename SignalType::Arguments, SlotType::ArgumentCount>::Value,
                                                 typename SignalType::ReturnType>(slot),
                           type, types, &SignalType::Object::staticMetaObject);
    }
 
    //connect to a functor
    template <typename Func1, typename Func2>
    static inline typename std::enable_if<
        QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1 &&
        !std::is_convertible_v<Func2, const char*>, // don't match old-style connect
    QMetaObject::Connection>::type
            connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot)
    {
        return connect(sender, signal, sender, std::move(slot), Qt::DirectConnection);
    }
 
    //connect to a functor, with a "context" object defining in which event loop is going to be executed
    template <typename Func1, typename Func2>
    static inline typename std::enable_if<
        QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1 &&
        !std::is_convertible_v<Func2, const char*>, // don't match old-style connect
    QMetaObject::Connection>::type
            connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, const QObject *context, Func2 slot,
                    Qt::ConnectionType type = Qt::AutoConnection)
    {
        typedef QtPrivate::FunctionPointer<Func1> SignalType;
        const int FunctorArgumentCount = QtPrivate::ComputeFunctorArgumentCount<Func2 , typename SignalType::Arguments>::Value;
 
        static_assert((FunctorArgumentCount >= 0),
                          "Signal and slot arguments are not compatible.");
        const int SlotArgumentCount = (FunctorArgumentCount >= 0) ? FunctorArgumentCount : 0;
        typedef typename QtPrivate::FunctorReturnType<Func2, typename QtPrivate::List_Left<typename SignalType::Arguments, SlotArgumentCount>::Value>::Value SlotReturnType;
 
        static_assert((QtPrivate::AreArgumentsCompatible<SlotReturnType, typename SignalType::ReturnType>::value),
                          "Return type of the slot is not compatible with the return type of the signal.");
 
        static_assert(QtPrivate::HasQ_OBJECT_Macro<typename SignalType::Object>::Value,
                          "No Q_OBJECT in the class with the signal");
 
        const int *types = nullptr;
        if (type == Qt::QueuedConnection || type == Qt::BlockingQueuedConnection)
            types = QtPrivate::ConnectionTypes<typename SignalType::Arguments>::types();
 
        return connectImpl(sender, reinterpret_cast<void **>(&signal), context, nullptr,
                           new QtPrivate::QFunctorSlotObject<Func2, SlotArgumentCount,
                                typename QtPrivate::List_Left<typename SignalType::Arguments, SlotArgumentCount>::Value,
                                typename SignalType::ReturnType>(std::move(slot)),
                           type, types, &SignalType::Object::staticMetaObject);
    }
#endif //Q_CLANG_QDOC
 
    static bool disconnect(const QObject *sender, const char *signal,
                           const QObject *receiver, const char *member);
    static bool disconnect(const QObject *sender, const QMetaMethod &signal,
                           const QObject *receiver, const QMetaMethod &member);
    inline bool disconnect(const char *signal = nullptr,
                           const QObject *receiver = nullptr, const char *member = nullptr) const
        { return disconnect(this, signal, receiver, member); }
    inline bool disconnect(const QObject *receiver, const char *member = nullptr) const
        { return disconnect(this, nullptr, receiver, member); }
    static bool disconnect(const QMetaObject::Connection &);
 
#ifdef Q_CLANG_QDOC
    template<typename PointerToMemberFunction>
    static bool disconnect(const QObject *sender, PointerToMemberFunction signal, const QObject *receiver, PointerToMemberFunction method);
#else
    template <typename Func1, typename Func2>
    static inline bool disconnect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                  const typename QtPrivate::FunctionPointer<Func2>::Object *receiver, Func2 slot)
    {
        typedef QtPrivate::FunctionPointer<Func1> SignalType;
        typedef QtPrivate::FunctionPointer<Func2> SlotType;
 
        static_assert(QtPrivate::HasQ_OBJECT_Macro<typename SignalType::Object>::Value,
                          "No Q_OBJECT in the class with the signal");
 
        //compilation error if the arguments does not match.
        static_assert((QtPrivate::CheckCompatibleArguments<typename SignalType::Arguments, typename SlotType::Arguments>::value),
                          "Signal and slot arguments are not compatible.");
 
        return disconnectImpl(sender, reinterpret_cast<void **>(&signal), receiver, reinterpret_cast<void **>(&slot),
                              &SignalType::Object::staticMetaObject);
    }
    template <typename Func1>
    static inline bool disconnect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal,
                                  const QObject *receiver, void **zero)
    {
        // This is the overload for when one wish to disconnect a signal from any slot. (slot=nullptr)
        // Since the function template parameter cannot be deduced from '0', we use a
        // dummy void ** parameter that must be equal to 0
        Q_ASSERT(!zero);
        typedef QtPrivate::FunctionPointer<Func1> SignalType;
        return disconnectImpl(sender, reinterpret_cast<void **>(&signal), receiver, zero,
                              &SignalType::Object::staticMetaObject);
    }
#endif //Q_CLANG_QDOC
 
    void dumpObjectTree() const;
    void dumpObjectInfo() const;
 
#ifndef QT_NO_PROPERTIES
    bool setProperty(const char *name, const QVariant &value);
    QVariant property(const char *name) const;
    QList<QByteArray> dynamicPropertyNames() const;
    QBindingStorage *bindingStorage() { return &d_ptr->bindingStorage; }
    const QBindingStorage *bindingStorage() const { return &d_ptr->bindingStorage; }
#endif // QT_NO_PROPERTIES
 
Q_SIGNALS:
    void destroyed(QObject * = nullptr);
    void objectNameChanged(const QString &objectName, QPrivateSignal);
 
public:
    inline QObject *parent() const { return d_ptr->parent; }
 
    inline bool inherits(const char *classname) const
    {
        return const_cast<QObject *>(this)->qt_metacast(classname) != nullptr;
    }
 
public Q_SLOTS:
    void deleteLater();
 
protected:
    QObject *sender() const;
    int senderSignalIndex() const;
    int receivers(const char *signal) const;
    bool isSignalConnected(const QMetaMethod &signal) const;
 
    virtual void timerEvent(QTimerEvent *event);
    virtual void childEvent(QChildEvent *event);
    virtual void customEvent(QEvent *event);
 
    virtual void connectNotify(const QMetaMethod &signal);
    virtual void disconnectNotify(const QMetaMethod &signal);
 
protected:
    QObject(QObjectPrivate &dd, QObject *parent = nullptr);
 
protected:
    QScopedPointer<QObjectData> d_ptr;
 
    friend struct QMetaObject;
    friend struct QMetaObjectPrivate;
    friend class QMetaCallEvent;
    friend class QApplication;
    friend class QApplicationPrivate;
    friend class QCoreApplication;
    friend class QCoreApplicationPrivate;
    friend class QWidget;
    friend class QAccessibleWidget;
    friend class QThreadData;
 
private:
    Q_DISABLE_COPY(QObject)
    Q_PRIVATE_SLOT(d_func(), void _q_reregisterTimers(void *))
 
private:
    static QMetaObject::Connection connectImpl(const QObject *sender, void **signal,
                                               const QObject *receiver, void **slotPtr,
                                               QtPrivate::QSlotObjectBase *slot, Qt::ConnectionType type,
                                               const int *types, const QMetaObject *senderMetaObject);
 
    static bool disconnectImpl(const QObject *sender, void **signal, const QObject *receiver, void **slot,
                               const QMetaObject *senderMetaObject);
 
};
 
inline QMetaObject::Connection QObject::connect(const QObject *asender, const char *asignal,
                                            const char *amember, Qt::ConnectionType atype) const
{ return connect(asender, asignal, this, amember, atype); }
 
template <class T>
inline T qobject_cast(QObject *object)
{
    typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
    static_assert(QtPrivate::HasQ_OBJECT_Macro<ObjType>::Value,
                    "qobject_cast requires the type to have a Q_OBJECT macro");
    return static_cast<T>(ObjType::staticMetaObject.cast(object));
}
 
template <class T>
inline T qobject_cast(const QObject *object)
{
    typedef typename std::remove_cv<typename std::remove_pointer<T>::type>::type ObjType;
    static_assert(QtPrivate::HasQ_OBJECT_Macro<ObjType>::Value,
                      "qobject_cast requires the type to have a Q_OBJECT macro");
    return static_cast<T>(ObjType::staticMetaObject.cast(object));
}
 
 
template <class T> constexpr const char * qobject_interface_iid() = delete;
template <class T> inline T *
qobject_iid_cast(QObject *object, const char *IId = qobject_interface_iid<T *>())
{
    return reinterpret_cast<T *>((object ? object->qt_metacast(IId) : nullptr));
}
template <class T> inline std::enable_if_t<std::is_const<T>::value, T *>
qobject_iid_cast(const QObject *object)
{
    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-const-cast)
    QObject *o = const_cast<QObject *>(object);
    return qobject_iid_cast<std::remove_cv_t<T>>(o);
}
 
#if defined(Q_CLANG_QDOC)
#  define Q_DECLARE_INTERFACE(IFace, IId)
#elif !defined(Q_MOC_RUN)
#  define Q_DECLARE_INTERFACE(IFace, IId) \
    template <> constexpr const char *qobject_interface_iid<IFace *>() \
    { return IId; } \
    template <> inline IFace *qobject_cast<IFace *>(QObject *object) \
    { return qobject_iid_cast<IFace>(object); } \
    template <> inline const IFace *qobject_cast<const IFace *>(const QObject *object) \
    { return qobject_iid_cast<const IFace>(object); }
#endif // Q_MOC_RUN
 
inline const QBindingStorage *qGetBindingStorage(const QObject *o)
{
    return o->bindingStorage();
}
inline QBindingStorage *qGetBindingStorage(QObject *o)
{
    return o->bindingStorage();
}
 
#ifndef QT_NO_DEBUG_STREAM
Q_CORE_EXPORT QDebug operator<<(QDebug, const QObject *);
#endif
 
class QSignalBlocker
{
public:
    inline explicit QSignalBlocker(QObject *o) noexcept;
    inline explicit QSignalBlocker(QObject &o) noexcept;
    inline ~QSignalBlocker();
 
    inline QSignalBlocker(QSignalBlocker &&other) noexcept;
    inline QSignalBlocker &operator=(QSignalBlocker &&other) noexcept;
 
    inline void reblock() noexcept;
    inline void unblock() noexcept;
 
private:
    Q_DISABLE_COPY(QSignalBlocker)
    QObject *m_o;
    bool m_blocked;
    bool m_inhibited;
};
 
QSignalBlocker::QSignalBlocker(QObject *o) noexcept
    : m_o(o),
      m_blocked(o && o->blockSignals(true)),
      m_inhibited(false)
{}
 
QSignalBlocker::QSignalBlocker(QObject &o) noexcept
    : m_o(&o),
      m_blocked(o.blockSignals(true)),
      m_inhibited(false)
{}
 
QSignalBlocker::QSignalBlocker(QSignalBlocker &&other) noexcept
    : m_o(other.m_o),
      m_blocked(other.m_blocked),
      m_inhibited(other.m_inhibited)
{
    other.m_o = nullptr;
}
 
QSignalBlocker &QSignalBlocker::operator=(QSignalBlocker &&other) noexcept
{
    if (this != &other) {
        // if both *this and other block the same object's signals:
        // unblock *this iff our dtor would unblock, but other's wouldn't
        if (m_o != other.m_o || (!m_inhibited && other.m_inhibited))
            unblock();
        m_o = other.m_o;
        m_blocked = other.m_blocked;
        m_inhibited = other.m_inhibited;
        // disable other:
        other.m_o = nullptr;
    }
    return *this;
}
 
QSignalBlocker::~QSignalBlocker()
{
    if (m_o && !m_inhibited)
        m_o->blockSignals(m_blocked);
}
 
void QSignalBlocker::reblock() noexcept
{
    if (m_o)
        m_o->blockSignals(true);
    m_inhibited = false;
}
 
void QSignalBlocker::unblock() noexcept
{
    if (m_o)
        m_o->blockSignals(m_blocked);
    m_inhibited = true;
}
 
namespace QtPrivate {
    inline QObject & deref_for_methodcall(QObject &o) { return  o; }
    inline QObject & deref_for_methodcall(QObject *o) { return *o; }
}
#define Q_SET_OBJECT_NAME(obj) QT_PREPEND_NAMESPACE(QtPrivate)::deref_for_methodcall(obj).setObjectName(QLatin1String(#obj))
 
QT_END_NAMESPACE
 
#endif
 
#endif // QOBJECT_H