1:
2:
3:
4:
5:
6:
7:
8:
9:
10:
11:
12:
13:
14:
15:

procedure ClrScr;
var
  tc: tcoord;
  nw: Cardinal;
  cbi: TConsoleScreenBufferInfo;
begin
  getConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE), cbi);
  tc.x := 0;
  tc.y := 0;
  FillConsoleOutputAttribute(GetStdHandle(STD_OUTPUT_HANDLE),
    textattribute, cbi.dwsize.x * cbi.dwsize.y, tc, nw);
  FillConsoleOutputCharacter(GetStdHandle(STD_OUTPUT_HANDLE),
    #32, cbi.dwsize.x * cbi.dwsize.y, tc, nw);
  setConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), tc);
end;