_dview = (DropBoardView)panel.getBoardView();
_dpanel = (DropPanel)panel;
_dboard = (DropBoard)_ctrl.getBoard();
// obtain the board dimensions
DropConfig dconfig = (DropConfig)config;
_bwid = dconfig.getBoardWidth();
_bhei = dconfig.getBoardHeight();
// create the piece dropper if appropriate
PieceDropLogic pdl = getPieceDropLogic();
if (pdl != null) {
_dropper = getPieceDropper(pdl);