Referencia de la Clase QWheelEvent

The QWheelEvent class contains parameters that describe a wheel event. Más...

#include <qevent.h>

Diagrama de herencias de QWheelEvent

Lista de todos los miembros.

Métodos públicos
	QWheelEvent (const QPoint &pos, int delta, int state, Orientation orient=Vertical)
	QWheelEvent (const QPoint &pos, const QPoint &globalPos, int delta, int state, Orientation orient=Vertical)
int	delta () const
const QPoint &	pos () const
const QPoint &	globalPos () const
int	x () const
int	y () const
int	globalX () const
int	globalY () const
ButtonState	state () const
Orientation	orientation () const
bool	isAccepted () const
void	accept ()
void	ignore ()
	QWheelEvent (const QPoint &pos, int delta, int state, Orientation orient=Vertical)
	QWheelEvent (const QPoint &pos, const QPoint &globalPos, int delta, int state, Orientation orient=Vertical)
int	delta () const
const QPoint &	pos () const
const QPoint &	globalPos () const
int	x () const
int	y () const
int	globalX () const
int	globalY () const
ButtonState	state () const
Orientation	orientation () const
bool	isAccepted () const
void	accept ()
void	ignore ()
Atributos protegidos
QPoint	p
QPoint	g
int	d
ushort	s
bool	accpt
Orientation	o

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Descripción detallada

The QWheelEvent class contains parameters that describe a wheel event.

Wheel events are sent to the widget under the mouse, and if that widget does not handle the event they are sent to the focus widget. The rotation distance is provided by delta(). The functions pos() and globalPos() return the mouse pointer location at the time of the event.

A wheel event contains a special accept flag that indicates whether the receiver wants the event. You should call QWheelEvent::accept() if you handle the wheel event; otherwise it will be sent to the parent widget.

The QWidget::setEnable() function can be used to enable or disable mouse and keyboard events for a widget.

The event handler QWidget::wheelEvent() receives wheel events.

Ver también:

QMouseEvent, QWidget::grabMouse()

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Documentación del constructor y destructor

QWheelEvent::QWheelEvent	(	const QPoint &	pos,
		int	delta,
		int	state,
		Orientation	orient = Vertical
	)

Constructs a wheel event object.

The globalPos() is initialized to QCursor::pos(), i.e. pos, which is usually (but not always) right. Use the other constructor if you need to specify the global position explicitly. delta contains the rotation distance, state holds the keyboard modifier flags at the time of the event and orient holds the wheel's orientation.

Ver también:

pos(), delta(), state()

QWheelEvent::QWheelEvent	(	const QPoint &	pos,
		const QPoint &	globalPos,
		int	delta,
		int	state,
		Orientation	orient = Vertical
	)		[inline]

Constructs a wheel event object. The position when the event occurred is given in pos and globalPos. delta contains the rotation distance, state holds the keyboard modifier flags at the time of the event and orient holds the wheel's orientation.

Ver también:

pos(), globalPos(), delta(), state()

QWheelEvent::QWheelEvent	(	const QPoint &	pos,
		int	delta,
		int	state,
		Orientation	orient = Vertical
	)

QWheelEvent::QWheelEvent	(	const QPoint &	pos,
		const QPoint &	globalPos,
		int	delta,
		int	state,
		Orientation	orient = Vertical
	)		[inline]

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Documentación de las funciones miembro

void QWheelEvent::accept

(

)

[inline]

Sets the accept flag of the wheel event object.

Setting the accept parameter indicates that the receiver of the event wants the wheel event. Unwanted wheel events are sent to the parent widget.

The accept flag is set by default.

Ver también:

ignore()

void QWheelEvent::accept

(

)

[inline]

int QWheelEvent::delta

(

)

const [inline]

Returns the distance that the wheel is rotated expressed in multiples or divisions of the {wheel delta}, which is currently defined to be 120. A positive value indicates that the wheel was rotated forwards away from the user; a negative value indicates that the wheel was rotated backwards toward the user.

The {wheel delta} constant was defined to be 120 by wheel mouse vendors to allow building finer-resolution wheels in the future, including perhaps a freely rotating wheel with no notches. The expectation is that such a device would send more messages per rotation but with a smaller value in each message.

int QWheelEvent::delta

(

)

const [inline]

const QPoint & QWheelEvent::globalPos

(

)

const [inline]

Returns the global position of the mouse pointer {at the time of the event}. This is important on asynchronous window systems such as X11; whenever you move your widgets around in response to mouse events, globalPos() can differ a lot from the current pointer position QCursor::pos().

Ver también:

globalX(), globalY()

const QPoint& QWheelEvent::globalPos

(

)

const [inline]

int QWheelEvent::globalX

(

)

const [inline]

int QWheelEvent::globalX

(

)

const [inline]

Returns the global x-position of the mouse pointer at the time of the event.

Ver también:

globalY(), globalPos()

int QWheelEvent::globalY

(

)

const [inline]

int QWheelEvent::globalY

(

)

const [inline]

Returns the global y-position of the mouse pointer at the time of the event.

Ver también:

globalX(), globalPos()

void QWheelEvent::ignore

(

)

[inline]

void QWheelEvent::ignore

(

)

[inline]

Clears the accept flag parameter of the wheel event object.

Clearing the accept parameter indicates that the event receiver does not want the wheel event. Unwanted wheel events are sent to the parent widget. The accept flag is set by default.

Ver también:

accept()

bool QWheelEvent::isAccepted

(

)

const [inline]

bool QWheelEvent::isAccepted

(

)

const [inline]

Returns TRUE if the receiver of the event handles the wheel event; otherwise returns FALSE.

Orientation QWheelEvent::orientation

(

)

const [inline]

Orientation QWheelEvent::orientation

(

)

const [inline]

Returns the wheel's orientation.

const QPoint & QWheelEvent::pos

(

)

const [inline]

Returns the position of the mouse pointer, relative to the widget that received the event.

If you move your widgets around in response to mouse events, use globalPos() instead of this function.

Ver también:

x(), y(), globalPos()

const QPoint& QWheelEvent::pos

(

)

const [inline]

ButtonState QWheelEvent::state

(

)

const [inline]

ButtonState QWheelEvent::state

(

)

const [inline]

Returns the keyboard modifier flags of the event.

The returned value is ShiftButton, ControlButton, and AltButton OR'ed together.

int QWheelEvent::x

(

)

const [inline]

int QWheelEvent::x

(

)

const [inline]

Returns the x-position of the mouse pointer, relative to the widget that received the event.

Ver también:

y(), pos()

int QWheelEvent::y

(

)

const [inline]

int QWheelEvent::y

(

)

const [inline]

Returns the y-position of the mouse pointer, relative to the widget that received the event.

Ver también:

x(), pos()

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Documentación de los datos miembro

bool QWheelEvent::accpt [protected]

int QWheelEvent::d [protected]

QPoint QWheelEvent::g [protected]

Orientation QWheelEvent::o [protected]

QPoint QWheelEvent::p [protected]

ushort QWheelEvent::s [protected]

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La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/include/qevent.h
• src/qt/src/kernel/qevent.h
• src/qt/src/kernel/qevent.cpp