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QGraphicsSceneWheelEvent Class Reference

The QGraphicsSceneWheelEvent class provides wheel events in the graphics view framework. More...

 #include <QGraphicsSceneWheelEvent>

Inherits: QGraphicsSceneEvent.

This class was introduced in Qt 4.2.

List of all members, including inherited members

Public Functions

	~QGraphicsSceneWheelEvent ()
Qt::MouseButtons	buttons () const
int	delta () const
Qt::KeyboardModifiers	modifiers () const
Qt::Orientation	orientation () const
QPointF	pos () const
QPointF	scenePos () const
QPoint	screenPos () const

1 public function inherited from QGraphicsSceneEvent
6 public functions inherited from QEvent

Additional Inherited Members

1 property inherited from QEvent
1 static public member inherited from QEvent

Detailed Description

The QGraphicsSceneWheelEvent class provides wheel events in the graphics view framework.

QWheelEvents received by a QGraphicsView are translated into QGraphicsSceneWheelEvents; it translates the QWheelEvent::globalPos() into item, scene, and screen coordinates (pos(), scenePos(), and screenPos()).

Member Function Documentation

QGraphicsSceneWheelEvent::~QGraphicsSceneWheelEvent ()

Destroys the QGraphicsSceneWheelEvent.

Qt::MouseButtons QGraphicsSceneWheelEvent::buttons () const

Returns the mouse buttons that were pressed when the wheel event occurred.

See also modifiers().

int QGraphicsSceneWheelEvent::delta () const

Returns the distance that the wheel is rotated, in eighths (1/8s) of a degree. 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.

Most mouse types work in steps of 15 degrees, in which case the delta value is a multiple of 120 (== 15 * 8).

Qt::KeyboardModifiers QGraphicsSceneWheelEvent::modifiers () const

Returns the keyboard modifiers that were active when the wheel event occurred.

See also buttons().

Qt::Orientation QGraphicsSceneWheelEvent::orientation () const

Returns the wheel orientation.

QPointF QGraphicsSceneWheelEvent::pos () const

Returns the position of the cursor in item coordinates when the wheel event occurred.

See also scenePos() and screenPos().

QPointF QGraphicsSceneWheelEvent::scenePos () const

Returns the position of the cursor in scene coordinates when the wheel event occurred.

See also pos() and screenPos().

QPoint QGraphicsSceneWheelEvent::screenPos () const

Returns the position of the cursor in screen coordinates when the wheel event occurred.

See also pos() and scenePos().

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