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Doc: Update QMetaType::metaObject() descriptions

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Pick-to: 6.4 6.3 6.2 5.15
Change-Id: Iff93f8fe2cf701d56d072e2593c76d49a70fc183
Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Mike Trahearn 2022-08-29 17:18:06 +10:00
parent 8e21844683
commit e27ecb2035
1 changed files with 11 additions and 9 deletions
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20
src/corelib/kernel/qmetatype.cpp
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@ -595,19 +595,21 @@ int QMetaType::registerHelper(const QtPrivate::QMetaTypeInterface *iface)
\fn constexpr const QMetaObject *QMetaType::metaObject() const
\since 5.5
return a QMetaObject relative to this type.
Returns a QMetaObject relative to this type.
If the type is a pointer type to a subclass of QObject, flags() contains
QMetaType::PointerToQObject and this function returns the corresponding QMetaObject. This can
be used to in combination with QMetaObject::construct to create QObject of this type.
QMetaType::PointerToQObject and this function returns the corresponding QMetaObject.
This can be used in combination with QMetaObject::newInstance() to create QObjects of this type.
If the type is a Q_GADGET, flags() contains QMetaType::IsGadget, and this function returns its
QMetaObject. This can be used to retrieve QMetaMethod and QMetaProperty and use them on a
pointer of this type. (given by QVariant::data for example)
If the type is a Q_GADGET, flags() contains QMetaType::IsGadget.
If the type is a pointer to a Q_GADGET, flags() contains QMetaType::PointerToGadget.
In both cases, this function returns its QMetaObject.
This can be used to retrieve QMetaMethod and QMetaProperty and use them on a
pointer of this type for example, as given by QVariant::data().
If the type is an enumeration, flags() contains QMetaType::IsEnumeration, and this function
returns the QMetaObject of the enclosing object if the enum was registered as a Q_ENUM or
\nullptr otherwise
If the type is an enumeration, flags() contains QMetaType::IsEnumeration.
In this case, this function returns the QMetaObject of the enclosing
object if the enum was registered as a Q_ENUM or \nullptr otherwise.
\sa QMetaType::flags()
*/