xgrf_2box

function xgrf_2box(

  xg_2cnt: SmallInt;

  xg_2xstep: SmallInt;

  xg_2ystep: SmallInt;

  xg_2doubled: SmallInt;

  xg_2corners: SmallInt;

  xg_2xc: SmallInt;

  xg_2yc: SmallInt;

  xg_2w: SmallInt;

  xg_2h: SmallInt

):SmallInt;