[hardwired]

Changes in PictureTransferHandler:

Code:

    public int getSourceActions(JComponent c) {
        return COPY;
    }

Changes in DTPicture class:

Code:

    public void mouseDragged(MouseEvent e) {
        //Don't bother to drag if the component displays no image.
        if (image == null) return;

        if (firstMouseEvent != null) {
            e.consume();

            int action = TransferHandler.COPY;

            int dx = Math.abs(e.getX() - firstMouseEvent.getX());
            int dy = Math.abs(e.getY() - firstMouseEvent.getY());
            //Arbitrarily define a 5-pixel shift as the
            //official beginning of a drag.
            if (dx > 5 || dy > 5) {
                //This is a drag, not a click.
                JComponent c = (JComponent)e.getSource();
                TransferHandler handler = c.getTransferHandler();
                //Tell the transfer handler to initiate the drag.
                handler.exportAsDrag(c, firstMouseEvent, action);
                firstMouseEvent = null;
            }
        }
    }