qobject.h File Reference

#include <QtCore/qobjectdefs.h>
#include <QtCore/qstring.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qlist.h>
#include <QtCore/qscopedpointer.h>
#include <QtCore/qmetatype.h>
#include <QtCore/qobject_impl.h>
#include <QtCore/qbindingstorage.h>
#include <chrono>

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Classes
class	QObjectData
class	QObject
	\inmodule QtCore More...
class	QSignalBlocker
	Exception-safe wrapper around QObject::blockSignals(). More...

Namespaces
namespace	QtPrivate
	\macro QT_NAMESPACE

Macros
#define	Q_DECLARE_INTERFACE(IFace, IId)
#define	Q_SET_OBJECT_NAME(obj)   QT_PREPEND_NAMESPACE(QtPrivate)::deref_for_methodcall(obj).setObjectName(QLatin1StringView(#obj))

Typedefs
typedef QList< QObject * >	QObjectList

Functions
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)
template<class T >
T	qobject_cast (QObject *object)
	\variable QObject::staticMetaObject
template<class T >
T	qobject_cast (const QObject *object)
template<class T >
constexpr const char *	qobject_interface_iid ()=delete
template<class T >
T *	qobject_iid_cast (QObject *object, const char *IId=qobject_interface_iid< T * >())
template<class T >
std::enable_if_t< std::is_const< T >::value, T * >	qobject_iid_cast (const QObject *object)
const QBindingStorage *	qGetBindingStorage (const QObject *o)
QBindingStorage *	qGetBindingStorage (QObject *o)
Q_CORE_EXPORT QDebug	operator<< (QDebug, const QObject *)
QObject &	QtPrivate::deref_for_methodcall (QObject &o)
QObject &	QtPrivate::deref_for_methodcall (QObject *o)

Macro Definition Documentation

Q_DECLARE_INTERFACE

#define Q_DECLARE_INTERFACE	(		IFace,
			IId
	)

Value:

    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); }

Definition at line 420 of file qobject.h.

Q_SET_OBJECT_NAME

#define Q_SET_OBJECT_NAME

(

obj

)

QT_PREPEND_NAMESPACE(QtPrivate)::deref_for_methodcall(obj).setObjectName(QLatin1StringView(#obj))

Definition at line 525 of file qobject.h.

Typedef Documentation

QObjectList

typedef QList<QObject*> QObjectList

related

Definition at line 44 of file qobject.h.

Function Documentation

operator<<()

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

Definition at line 4336 of file qobject.cpp.

References o.

qGetBindingStorage() [1/2]

const QBindingStorage * qGetBindingStorage ( const QObject *  o )

inline

Definition at line 429 of file qobject.h.

References o.

Referenced by QObjectBindableProperty< Class, T, Offset, Signal >::binding(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::binding(), QObjectBindableProperty< Class, T, Offset, Signal >::bindingData(), QObjectComputedProperty< Class, T, Offset, Getter >::bindingData(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::bindingData(), QObjectBindableProperty< Class, T, Offset, Signal >::hasBinding(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::hasBinding(), QObjectBindableProperty< Class, T, Offset, Signal >::notify(), QObjectComputedProperty< Class, T, Offset, Getter >::notify(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::notify(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::removeBindingUnlessInWrapper(), QObjectBindableProperty< Class, T, Offset, Signal >::setBinding(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::setBinding(), QObjectBindableProperty< Class, T, Offset, Signal >::setValue(), QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::setValue(), QObjectBindableProperty< Class, T, Offset, Signal >::setValue(), QObjectBindableProperty< Class, T, Offset, Signal >::value(), QObjectComputedProperty< Class, T, Offset, Getter >::value(), and QObjectCompatProperty< Class, T, Offset, Setter, Signal, Getter >::value().

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qGetBindingStorage() [2/2]

QBindingStorage * qGetBindingStorage ( QObject *  o )

inline

Definition at line 433 of file qobject.h.

References o.

qobject_cast() [1/2]

template<class T >

T qobject_cast ( const QObject *  object )

related

Definition at line 394 of file qobject.h.

qobject_cast() [2/2]

template<class T >

template< class T > T qobject_cast ( QObject *  object )

inline

\variable QObject::staticMetaObject

This variable stores the meta-object for the class.

A meta-object contains information about a class that inherits QObject, e.g. class name, superclass name, properties, signals and slots. Every class that contains the Q_OBJECT macro will also have a meta-object.

The meta-object information is required by the signal/slot connection mechanism and the property system. The inherits() function also makes use of the meta-object.

If you have a pointer to an object, you can use metaObject() to retrieve the meta-object associated with that object.

Example:

QPushButton::staticMetaObject.className();  // returns "QPushButton"
 
QObject *obj = new QPushButton;
obj->metaObject()->className();             // returns "QPushButton"

See also

metaObject()

Definition at line 385 of file qobject.h.

qobject_iid_cast() [1/2]

template<class T >

std::enable_if_t< std::is_const< T >::value, T * > qobject_iid_cast ( const QObject *  object )

inline

Definition at line 410 of file qobject.h.

References o.

qobject_iid_cast() [2/2]

template<class T >

T * qobject_iid_cast ( QObject *  object, const char *  IId = qobject_interface_iid<T *>()  )

inline

Definition at line 405 of file qobject.h.

qobject_interface_iid()

template<class T >

constexpr const char * qobject_interface_iid ( )

constexprdelete

qt_qFindChild_helper()

Q_CORE_EXPORT QObject * qt_qFindChild_helper	(	const QObject *	parent,
		const QString &	name,
		const QMetaObject &	mo,
		Qt::FindChildOptions	options
	)

Definition at line 2121 of file qobject.cpp.

References child, QObject::children(), Qt::FindChildrenRecursively, mo, QObjectData::parent, Q_ASSERT, and qt_qFindChild_helper().

Referenced by QObject::findChild(), and qt_qFindChild_helper().

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qt_qFindChildren_helper() [1/3]

Q_CORE_EXPORT void qt_qFindChildren_helper	(	const QObject *	parent,
		const QMetaObject &	mo,
		QList< void * > *	list,
		Qt::FindChildOptions	options
	)

Definition at line 2084 of file qobject.cpp.

References QList< T >::append(), QObject::children(), Qt::FindChildrenRecursively, list, mo, QObjectData::parent, Q_ASSERT, and qt_qFindChildren_helper().

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qt_qFindChildren_helper() [2/3]

Q_CORE_EXPORT void qt_qFindChildren_helper	(	const QObject *	parent,
		const QRegularExpression &	re,
		const QMetaObject &	mo,
		QList< void * > *	list,
		Qt::FindChildOptions	options
	)

qt_qFindChildren_helper() [3/3]

Q_CORE_EXPORT void qt_qFindChildren_helper	(	const QObject *	parent,
		const QString &	name,
		const QMetaObject &	mo,
		QList< void * > *	list,
		Qt::FindChildOptions	options
	)

Definition at line 2072 of file qobject.cpp.

References list, mo, QObjectData::parent, qt_qFindChildren_helper(), and qt_qFindChildren_with_name().

Referenced by QObject::findChildren(), QObject::findChildren(), qt_qFindChildren_helper(), and qt_qFindChildren_helper().

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