xgrf_stepcalc

function xgrf_stepcalc(

  xg_storgw: SmallInt;

  xg_storgh: SmallInt;

  xg_stxc: SmallInt;

  xg_styc: SmallInt;

  xg_stw: SmallInt;

  xg_sth: SmallInt;

  out xg_stpcx: SmallInt;

  out xg_stpcy: SmallInt;

  out xg_stpcnt: SmallInt;

  out xg_stpxstep: SmallInt;

  out xg_stpystep: SmallInt

):SmallInt;