qobject.h File Reference

#include <QtCore/qobjectdefs.h>
#include <QtCore/qstring.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qlist.h>
#include <QtCore/qscopedpointer.h>

Go to the source code of this file.

Classes
class	QObjectData
class	QObject
class	QObjectUserData
Defines
#define	Q_DECLARE_INTERFACE(IFace, IId)
Typedefs
typedef QList< QObject * >	QObjectList
Functions
template<typename T >
T	qFindChild (const QObject *, const QString &=QString())
template<typename T >
QList< T >	qFindChildren (const QObject *, const QString &=QString())
template<typename T >
QList< T >	qFindChildren (const QObject *, const QRegExp &)
Q_CORE_EXPORT void	qt_qFindChildren_helper (const QObject *parent, const QString &name, const QRegExp *re, const QMetaObject &mo, QList< void * > *list)
Q_CORE_EXPORT QObject *	qt_qFindChild_helper (const QObject *parent, const QString &name, const QMetaObject &mo)
template<class T >
T	qobject_cast (QObject *object)
template<class T >
T	qobject_cast (const QObject *object)
template<class T >
const char *	qobject_interface_iid ()
Q_CORE_EXPORT QDebug	operator<< (QDebug, const QObject *)

---

Define Documentation

#define Q_DECLARE_INTERFACE	(		IFace,
			IId
	)

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Value:

template <> inline const char *qobject_interface_iid<IFace *>() \
    { return IId; } \
    template <> inline IFace *qobject_cast<IFace *>(QObject *object) \
    { return reinterpret_cast<IFace *>((object ? object->qt_metacast(IId) : 0)); } \
    template <> inline IFace *qobject_cast<IFace *>(const QObject *object) \
    { return reinterpret_cast<IFace *>((object ? const_cast<QObject *>(object)->qt_metacast(IId) : 0)); }

Definition at line 387 of file qobject.h.

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Typedef Documentation

typedef QList<QObject*> QObjectList

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Definition at line 75 of file qobject.h.

---

Function Documentation

T qFindChild	(	const QObject *	o,
		const QString &	name = QString()
	)		[inline]

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Definition at line 329 of file qobject.h.

{ return static_cast<T>(qt_qFindChild_helper(o, name, reinterpret_cast<T>(0)->staticMetaObject)); }

QList< T > qFindChildren	(	const QObject *	o,
		const QString &	name = QString()
	)		[inline]

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Definition at line 333 of file qobject.h.

{
    QList<T> list;
    union {
        QList<T> *typedList;
        QList<void *> *voidList;
    } u;
    u.typedList = &list;
    qt_qFindChildren_helper(o, name, 0, reinterpret_cast<T>(0)->staticMetaObject, u.voidList);
    return list;
}

QList< T > qFindChildren	(	const QObject *	o,
		const QRegExp &	re
	)		[inline]

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Definition at line 347 of file qobject.h.

{
    QList<T> list;
    union {
        QList<T> *typedList;
        QList<void *> *voidList;
    } u;
    u.typedList = &list;
    qt_qFindChildren_helper(o, QString(), &re, reinterpret_cast<T>(0)->staticMetaObject, u.voidList);
    return list;
}

Q_CORE_EXPORT void qt_qFindChildren_helper	(	const QObject *	parent,
		const QString &	name,
		const QRegExp *	re,
		const QMetaObject &	mo,
		QList< void * > *	list
	)

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Q_CORE_EXPORT QObject* qt_qFindChild_helper	(	const QObject *	parent,
		const QString &	name,
		const QMetaObject &	mo
	)

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T qobject_cast

(

QObject *

object

)

[inline]

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Definition at line 361 of file qobject.h.

{
#if !defined(QT_NO_MEMBER_TEMPLATES) && !defined(QT_NO_QOBJECT_CHECK)
    reinterpret_cast<T>(0)->qt_check_for_QOBJECT_macro(*reinterpret_cast<T>(object));
#endif
    return static_cast<T>(reinterpret_cast<T>(0)->staticMetaObject.cast(object));
}

T qobject_cast

(

const QObject *

object

)

[inline]

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Definition at line 370 of file qobject.h.

{
    // this will cause a compilation error if T is not const
    register T ptr = static_cast<T>(object);
    Q_UNUSED(ptr);

#if !defined(QT_NO_MEMBER_TEMPLATES) && !defined(QT_NO_QOBJECT_CHECK)
    reinterpret_cast<T>(0)->qt_check_for_QOBJECT_macro(*reinterpret_cast<T>(const_cast<QObject *>(object)));
#endif
    return static_cast<T>(const_cast<QObject *>(reinterpret_cast<T>(0)->staticMetaObject.cast(const_cast<QObject *>(object))));
}

const char* qobject_interface_iid

(

)

[inline]

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Definition at line 383 of file qobject.h.

{ return 0; }

Q_CORE_EXPORT QDebug operator<<	(	QDebug	,
		const QObject *
	)