QAccessibleEvent Class

The QAccessibleEvent class is the base class for accessibility notifications. 更多...

头文件:	#include <QAccessibleEvent>
qmake:	QT += gui
派生类:	QAccessibleStateChangeEvent, QAccessibleTableModelChangeEvent, QAccessibleTextCursorEvent, and QAccessibleValueChangeEvent

所有的成员列表, 包括继承的成员

公有函数

	QAccessibleEvent(QObject *object, QAccessible::Event type)
	QAccessibleEvent(QAccessibleInterface *interface, QAccessible::Event type)
virtual	~QAccessibleEvent()
virtual QAccessibleInterface *	accessibleInterface() const
int	child() const
QObject *	object() const
void	setChild(int child)
QAccessible::Event	type() const

详细描述

The QAccessibleEvent class is the base class for accessibility notifications.

This class is used with QAccessible::updateAccessibility().

The event type is one of the values of QAccessible::Event. There are a number of subclasses that should be used to provide more details about the event.

For example to notify about a focus change when re-implementing QWidget::setFocus, the event could be used as follows:


  void MyWidget::setFocus(Qt::FocusReason reason)
  {
      // handle custom focus setting...
      QAccessibleEvent event(f, QAccessible::Focus);
      QAccessible::updateAccessibility(&event);
  }

To enable in process screen readers, all events must be sent after the change has happened.

成员函数

QAccessibleEvent::QAccessibleEvent(QObject **object, QAccessible::Event type*)

Constructs a QAccessibleEvent to notify that object has changed. The event type describes what changed.

QAccessibleEvent::QAccessibleEvent(QAccessibleInterface **interface, QAccessible::Event type*)

Constructs a QAccessibleEvent to notify that interface has changed. The event type describes what changed. Use this function if you already have a QAccessibleInterface or no QObject, otherwise consider the overload taking a QObject parameter as it might be cheaper.

`[virtual]` QAccessibleEvent::~QAccessibleEvent()

Destroys the event.

`[virtual]` QAccessibleInterface *QAccessibleEvent::accessibleInterface() const

Returns the QAccessibleInterface associated with the event. The caller of this function takes ownership of the returned interface.

int QAccessibleEvent::child() const

Returns the child index.

参见 setChild().

QObject *QAccessibleEvent::object() const

Returns the event object.

void QAccessibleEvent::setChild(int child)

Sets the child index to child.

参见 child().

QAccessible::Event QAccessibleEvent::type() const

Returns the event type.

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