*/
public int dragEnter(long dataObjectPtr, int x, int y,
int userAction, int sourceActions) {
dataObject = new WinDataTransfer.IDataObject(dataObjectPtr);
DataSnapshot snapshot = new DataSnapshot(dataObject);
transferable = new DataProxy(snapshot);
DropTargetDragEvent e = new DropTargetDragEvent(
context, new Point(x, y),
WinDragSource.getDndActions(userAction),