Qt Jambi Home

com.trolltech.qt.gui
Class QDropEvent

java.lang.Object
  extended by com.trolltech.qt.QSignalEmitter
      extended by com.trolltech.qt.QtJambiObject
          extended by com.trolltech.qt.core.QEvent
              extended by com.trolltech.qt.gui.QDropEvent
All Implemented Interfaces:
QtJambiInterface
Direct Known Subclasses:
QDragMoveEvent

public class QDropEvent
extends QEvent

The QDropEvent class provides an event which is sent when a drag and drop action is completed.

When a widget accepts drop events, it will receive this event if it has accepted the most recent QDragEnterEvent or QDragMoveEvent sent to it.

The drop event contains a proposed action, available from proposedAction, for the widget to either accept or ignore. If the action can be handled by the widget, you should call the acceptProposedAction function. Since the proposed action can be a combination of Qt::DropAction values, it may be useful to either select one of these values as a default action or ask the user to select their preferred action.

If the proposed drop action is not suitable, perhaps because your custom widget does not support that action, you can replace it with any of the possible drop actions by calling setDropAction with your preferred action. If you set a value that is not present in the bitwise OR combination of values returned by possibleActions, the default copy action will be used. Once a replacement drop action has been set, call accept instead of acceptProposedAction to complete the drop operation.

The mimeData function provides the data dropped on the widget in a QMimeData object. This contains information about the MIME type of the data in addition to the data itself.

See Also:
QMimeData, QDrag, Drag and Drop

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
QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers)
          Equivalent to QDropEvent(pos, actions, data, buttons, modifiers, Drop).
QDropEvent(QPoint pos, Qt.DropActions actions, QMimeData data, Qt.MouseButtons buttons, Qt.KeyboardModifiers modifiers, QEvent.Type type)
          Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.
 
Method Summary
 void acceptProposedAction()
          Sets the drop action to be the proposed action.
 Qt.DropAction dropAction()
          Returns the action to be performed on the data by the target.
static QDropEvent fromNativePointer(QNativePointer nativePointer)
          This function returns the QDropEvent instance pointed to by nativePointer
 Qt.KeyboardModifiers keyboardModifiers()
          Returns the modifier keys that are pressed.
 QMimeData mimeData()
          Returns the data that was dropped on the widget and its associated MIME type information.
 Qt.MouseButtons mouseButtons()
          Returns the mouse buttons that are pressed..
 QPoint pos()
          Returns the position where the drop was made.
 Qt.DropActions possibleActions()
          Returns an OR-combination of possible drop actions.
 Qt.DropAction proposedAction()
          Returns the proposed drop action.
protected  void setAct(Qt.DropAction... act)
          Sets this QDropEvent's drop actions to act.
 void setDropAction(Qt.DropAction action)
          Sets the action to be performed on the data by the target.
protected  void setModState(Qt.KeyboardModifier... modState)
          This method sets the keyboard modifiers for this QDropEvent to modState.
protected  void setMouseState(Qt.MouseButton... mouseState)
          Sets the mouse button state for this QDropEvent to mouseState.
 QWidget source()
          If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0.
 
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

QDropEvent

public QDropEvent(QPoint pos,
                  Qt.DropActions actions,
                  QMimeData data,
                  Qt.MouseButtons buttons,
                  Qt.KeyboardModifiers modifiers)

Equivalent to QDropEvent(pos, actions, data, buttons, modifiers, Drop).


QDropEvent

public QDropEvent(QPoint pos,
                  Qt.DropActions actions,
                  QMimeData data,
                  Qt.MouseButtons buttons,
                  Qt.KeyboardModifiers modifiers,
                  QEvent.Type type)

Constructs a drop event of a certain type corresponding to a drop at the point specified by pos in the destination widget's coordinate system.

The actions indicate which types of drag and drop operation can be performed, and the drag data is stored as MIME-encoded data in data.

The states of the mouse buttons and keyboard modifiers at the time of the drop are specified by buttons and modifiers.

Method Detail

acceptProposedAction

public final void acceptProposedAction()

Sets the drop action to be the proposed action.

See Also:
setDropAction, proposedAction, accept

dropAction

public final Qt.DropAction dropAction()

Returns the action to be performed on the data by the target. This may be different from the action supplied in proposedAction if you have called setDropAction to explicitly choose a drop action.

See Also:
setDropAction

keyboardModifiers

public final Qt.KeyboardModifiers keyboardModifiers()

Returns the modifier keys that are pressed.


mimeData

public final QMimeData mimeData()

Returns the data that was dropped on the widget and its associated MIME type information.


mouseButtons

public final Qt.MouseButtons mouseButtons()

Returns the mouse buttons that are pressed..


pos

public final QPoint pos()

Returns the position where the drop was made.


possibleActions

public final Qt.DropActions possibleActions()

Returns an OR-combination of possible drop actions.

See Also:
dropAction

proposedAction

public final Qt.DropAction proposedAction()

Returns the proposed drop action.

See Also:
dropAction

setDropAction

public final void setDropAction(Qt.DropAction action)

Sets the action to be performed on the data by the target. Use this to override the proposed action with one of the possible actions.

If you set a drop action that is not one of the possible actions, the drag and drop operation will default to a copy operation.

Once you have supplied a replacement drop action, call accept instead of acceptProposedAction.

See Also:
dropAction

source

public final QWidget source()

If the source of the drag operation is a widget in this application, this function returns that source; otherwise it returns 0. The source of the operation is the first parameter to the QDrag object used instantiate the drag.

This is useful if your widget needs special behavior when dragging to itself.

See Also:
QDrag::QDrag

setModState

protected final void setModState(Qt.KeyboardModifier... modState)
This method sets the keyboard modifiers for this QDropEvent to modState.


setMouseState

protected final void setMouseState(Qt.MouseButton... mouseState)
Sets the mouse button state for this QDropEvent to mouseState.


setAct

protected final void setAct(Qt.DropAction... act)
Sets this QDropEvent's drop actions to act. act


fromNativePointer

public static QDropEvent fromNativePointer(QNativePointer nativePointer)
This function returns the QDropEvent instance pointed to by nativePointer

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

Qt Jambi Home