QAccessibleAttributesInterface Class

The QAccessibleAttributesInterface class implements support for reporting attributes for an accessible object. 更多...

头：	`#include <QAccessibleAttributesInterface>`
CMake:	`find_package(Qt6 REQUIRED COMPONENTS Gui)` `target_link_libraries(mytarget PRIVATE Qt6::Gui)`
qmake:	`QT += gui`
Since:	Qt 6.8

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QAccessibleAttributesInterface is part of 可访问性类 .

公共函数

virtual	~QAccessibleAttributesInterface ()
virtual QList<QAccessible::Attribute>	attributeKeys () const = 0
virtual QVariant	attributeValue (QAccessible::Attribute key ) const = 0

详细描述

Attributes are key-value pairs. Values are stored in QVariant .

The QAccessible::Attribute enumeration describes the available keys and documents which type to use for the value of each key.

While the text-specific attributes handled by QAccessibleTextInterface::attributes are specific to objects implementing text and are specific to a specific text position/offset, the attributes handled by the QAccessibleAttributesInterface can be used for objects of any role and apply for the whole object.

Classes already implementing QAccessibleTextInterface for text-specific attrtibutes may want to implement QAccessibleAttributesInterface in addition for object-specific attributes.

成员函数文档编制

`[virtual noexcept]` QAccessibleAttributesInterface:: ~QAccessibleAttributesInterface ()

销毁 QAccessibleAttributesInterface .

`[pure virtual]` QList < QAccessible::Attribute > QAccessibleAttributesInterface:: attributeKeys () const

Returns the keys of all attributes the object supports. The QAccessible::Attribute enumeration describes available keys.

`[pure virtual]` QVariant QAccessibleAttributesInterface:: attributeValue ( QAccessible::Attribute key ) const

Returns the value of the attribute key of this object.

If the attribute is set for this object, a value of the type documented for the given key in the documentation of the QAccessible::Attribute enumeration is returned in the QVariant .

Otherwise, an invalid QVariant 被返回。