Composite composite;
		DragSource dragSource = new DragSource(composite, DND.DROP_DEFAULT | DND.DROP_MOVE | DND.DROP_COPY);
		Transfer[] transfers = new Transfer[] {new MyTransfer()};
		dragSource.setTransfer(transfers);
		dragSource.addDragListener(new DragSourceAdapter() {
			
			@Override
			public void dragStart(DragSourceEvent event) {
				
				System.out.println("start");
			}
			
			@Override
			public void dragSetData(DragSourceEvent event) {
				System.out.println("setData");	
			}
		});