Cómo obtener las variables de entorno del DOS

[dec]

Cómo obtener las variables de entorno del DOS

Código Delphi [-]
procedure TForm1.Button1Click(Sender: TObject);
var
  Env : PChar;
  i : Integer;
  S : String;
  PosEq : Integer;

begin
  Env := GetDosEnvironment;
  With ListBox1,StringGrid1 do begin
    While Env^ <> #0 do begin
      Items.Add(StrPas(Env));
      Inc(Env,StrLen(Env)+1);
    end;
    RowCount := Items.Count;
    for i := 0 to Pred(Items.Count) do begin
      PosEq := Pos('=',Items[i]);
      Cells[0,i] := Copy(Items[i],1,PosEq-1);
      Cells[1,i] := Copy(Items[i],PosEq+1,Length(Items[i]));
    end;
  end;
end;