CopperSpice API  1.7.2
QFocusEvent Class Reference

The QFocusEvent class contains event parameters for widget focus events. More...

Inheritance diagram for QFocusEvent:

Public Methods

 QFocusEvent (Type type, Qt::FocusReason reason=Qt::OtherFocusReason)
bool gotFocus () const
bool lostFocus () const
Qt::FocusReason reason () const
- Public Methods inherited from QEvent
 QEvent (const QEvent &other)
 QEvent (Type type)
virtual ~QEvent ()
void accept ()
void ignore ()
bool isAccepted () const
QEvent & operator= (const QEvent &other)
void setAccepted (bool accepted)
bool spontaneous () const
Type type () const

Additional Inherited Members

- Public Types inherited from QEvent
enum  Type
- Static Public Methods inherited from QEvent
static int registerEventType (int hint=-1)

Detailed Description

The QFocusEvent class contains event parameters for widget focus events.

Focus events are sent to widgets when the keyboard input focus changes. Focus events occur due to mouse actions, key presses (such as Tab or Backtab), the window system, popup menus, keyboard shortcuts, or other application-specific reasons. The reason for a particular focus event is returned by reason() in the appropriate event handler.

The event handlers QWidget::focusInEvent(), QWidget::focusOutEvent(), QGraphicsItem::focusInEvent and QGraphicsItem::focusOutEvent() receive focus events.

See also
QWidget::setFocus(), QWidget::setFocusPolicy(), Keyboard Focus

Constructor & Destructor Documentation

QFocusEvent::QFocusEvent ( Type  type,
Qt::FocusReason  reason = Qt::OtherFocusReason 

Constructs a focus event object.

The type parameter must be either QEvent::FocusIn or QEvent::FocusOut. The reason describes the cause of the change in focus.

Method Documentation

bool QFocusEvent::gotFocus ( ) const

Returns true if type() is QEvent::FocusIn, otherwise returns false.

bool QFocusEvent::lostFocus ( ) const

Returns true if type() is QEvent::FocusOut, otherwise returns false.

Qt::FocusReason QFocusEvent::reason ( ) const

Returns the reason for this focus event.