Code:

procedure CaretPos(H: THandle; var L,C : Word);

begin

L := SendMessage(H,EM_LINEFROMCHAR,-1,0);

C := LoWord(SendMessage(H,EM_GETSEL,0,0)) - SendMessage(H,EM_LINEINDEX,-1,0);

end;

procedure TForm1.Button1Click(Sender: TObject);

var

LineNum,ColNum : Word;

begin

CaretPos(Memo1.Handle,LineNum,ColNum);

Edit1.Text := IntToStr(LineNum) + '  ' + IntToStr(ColNum);

end;

Code:

var

X, Y: LongInt;

begin

Y := Memo1.Perform(EM_LINEFROMCHAR, Memo1.SelStart, 0);

X := Memo1.Perform(EM_LINEINDEX, Y, 0);

inc(Y);

X := Memo1.SelStart - X + 1;

Form1.Caption := 'X = ' + IntToStr(X) + ' : ' + 'Y = ' + IntToStr(Y);

end;