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## com.trolltech.qt.gui
Class QGraphicsSceneEvent

    java.lang.Object
      com.trolltech.qt.QSignalEmitter
          com.trolltech.qt.QtJambiObject
              com.trolltech.qt.core.QEvent
                  com.trolltech.qt.gui.QGraphicsSceneEvent

All Implemented Interfaces:
  QtJambiInterface

Direct Known Subclasses:
  QGraphicsSceneContextMenuEvent, QGraphicsSceneDragDropEvent, QGraphicsSceneHelpEvent, QGraphicsSceneHoverEvent, QGraphicsSceneMouseEvent, QGraphicsSceneWheelEvent

    public class QGraphicsSceneEvent

extends QEvent

The `QGraphicsSceneEvent` class provides a base class for all graphics view related events.

When a `QGraphicsView` receives Qt mouse, keyboard, and drag and drop events (`QMouseEvent`, `QKeyEvent`, QDragEvent, etc.), it translates them into instances of `QGraphicsSceneEvent` subclasses and forwards them to the `QGraphicsScene` it displays. The scene then forwards the events to the relevant items.

For example, when a `QGraphicsView` receives a `QMouseEvent` of type MousePress as a response to a user click, the view sends a `QGraphicsSceneMouseEvent` of type `GraphicsSceneMousePress` to the underlying `QGraphicsScene` through its mousePressEvent() function. The default QGraphicsScene::mousePressEvent() implementation determines which item was clicked and forwards the event to QGraphicsItem::mousePressEvent().

Subclasses such as `QGraphicsSceneMouseEvent` and `QGraphicsSceneContextMenuEvent` provide the coordinates from the original `QEvent` in screen, scene, and item coordinates (see screenPos(), scenePos(), and pos()). The item coordinates are set by the `QGraphicsScene` before it forwards the event to the event to a `QGraphicsItem`. The mouse events also add the possibility to retrieve the coordinates from the last event received by the view (see lastScreenPos(), lastScenePos(), and lastPos()).

See Also:
  `QEvent`

Nested Class Summary

Nested classes/interfaces inherited from class com.trolltech.qt.core.QEvent
`QEvent.Type`

Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter
`QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1<A>, QSignalEmitter.Signal2<A,B>, QSignalEmitter.Signal3<A,B,C>, QSignalEmitter.Signal4<A,B,C,D>, QSignalEmitter.Signal5<A,B,C,D,E>, QSignalEmitter.Signal6<A,B,C,D,E,F>, QSignalEmitter.Signal7<A,B,C,D,E,F,G>, QSignalEmitter.Signal8<A,B,C,D,E,F,G,H>, QSignalEmitter.Signal9<A,B,C,D,E,F,G,H,I>`

Constructor Summary
`QGraphicsSceneEvent(QEvent.Type type)`

Method Summary
`static QGraphicsSceneEvent` | `fromNativePointer(QNativePointer nativePointer)` This function returns the QGraphicsSceneEvent instance pointed to by nativePointer
`QWidget` | `widget()` Returns the widget where the event originated, or 0 if the event originates from another application.

Methods inherited from class com.trolltech.qt.core.QEvent
`accept, ignore, isAccepted, setAccepted, setT, spontaneous, t, type`

Methods inherited from class com.trolltech.qt.QtJambiObject
`dispose, disposed, finalize, reassignNativeResources, tr, tr, tr`

Methods inherited from class com.trolltech.qt.QSignalEmitter
`blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread`

Methods inherited from class java.lang.Object
`clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface com.trolltech.qt.QtJambiInterface
`disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership`

Constructor Detail

### QGraphicsSceneEvent

    public QGraphicsSceneEvent(QEvent.Type type)

Method Detail

### widget

    public final QWidget widget()

  Returns the widget where the event originated, or 0 if the event originates from another application.

### fromNativePointer

    public static QGraphicsSceneEvent fromNativePointer(QNativePointer nativePointer)

  This function returns the QGraphicsSceneEvent instance pointed to by nativePointer

  Parameters:
    `nativePointer` - the QNativePointer of which object should be returned.

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