QVariantRef 类

template <typename Pointer> class QVariantRef

QVariantRef 充当非常量引用为 QVariant . 更多...

头：	#include <QVariantRef>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Core) target_link_libraries(mytarget PRIVATE Qt6::Core)
qmake:	QT += core
Since:	Qt 6.0

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公共函数

	QVariantRef (const Pointer * pointer )
QVariant	operator QVariant () const
QVariantRef<Pointer> &	operator= (const QVariant & value )
QVariantRef<Pointer> &	operator= (const QVariantRef<Pointer> & value )
QVariantRef<Pointer> &	operator= (QVariantRef<Pointer> && value )

详细描述

As the generic iterators don't actually instantiate a QVariant on each step, they cannot return a reference to one from operator*(). QVariantRef provides the same functionality as an actual reference to a QVariant would, but is backed by a pointer given as template parameter. The template is implemented for pointers of type QSequentialIterator and QAssociativeIterator.

成员函数文档编制

[explicit] QVariantRef:: QVariantRef (const Pointer * pointer )

Creates a QVariantRef from an pointer .

QVariant QVariantRef:: operator QVariant () const

Resolves the QVariantRef to an actual QVariant .

QVariantRef < Pointer > &QVariantRef:: operator= (const QVariant & value )

Assigns a new value to the value pointed to by the pointer this QVariantRef refers to.

QVariantRef < Pointer > &QVariantRef:: operator= (const QVariantRef < Pointer > & value )

Assigns a new value to the value pointed to by the pointer this QVariantRef refers to.

QVariantRef < Pointer > &QVariantRef:: operator= ( QVariantRef < Pointer > && value )

Assigns a new value to the value pointed to by the pointer this QVariantRef refers to.

内容

• 公共函数

• 详细描述