DBGrid中插入DateTimePicker

procedure TForm13.DateTimePicker1Change(Sender: TObject);       //写回 日期
begin
    DBGrid1.DataSource.Edit;
    DBGrid1.Columns[2].Field.Value  := DateTimePicker1.DateTime;  //2 为 'DateAdded'所在的列序号
    fdquery1.Post;
end;

procedure TForm13.DateTimePicker1KeyPress(Sender: TObject; var Key: Char);
begin
   if (key = Chr(13)) then  begin     //手动 在  DateTimePicker1输入日期数字后，按回车 保存到 数据库

    DateTimePicker1.Visible:= false;
    DBGrid1.DataSource.Edit;
    DBGrid1.Columns[2].Field.Value  := DateTimePicker1.DateTime;
    fdquery1.Post;
   end;
end;

procedure TForm13.DBGrid1ColExit(Sender: TObject);// 退出 时，不显示 编辑 控件
begin
  if DBGrid1.SelectedField.FieldName = 'password' then    DateTimePicker1.Visible := False;
end;

procedure TForm13.DBGrid1DrawColumnCell(Sender: TObject; const Rect: TRect;
  DataCol: Integer; Column: TColumn; State: TGridDrawState);
begin
  if (gdFocused in State) then
  begin
    if (Column.Field.FieldName = 'password') then
    with DateTimePicker1 do
    begin
      Left := Rect.Left + DBGrid1.Left + 1;
      Top := Rect.Top + DBGrid1.Top + 1;
      Width := Rect.Right - Rect.Left + 2;
      Width := Rect.Right - Rect.Left + 2;
      Height := Rect.Bottom - Rect.Top + 2;

     DateTimePicker1.Date:=  Column.Field.Value;// 数据库 传给 DateTimePicker1
      Visible := True;
    end;
  end
end;

procedure TForm13.DBGrid1KeyPress(Sender: TObject; var Key: Char);
begin
  if (key = Chr(9)) then Exit;  //TAB键 直接 退出

  if (DBGrid1.SelectedField.FieldName = 'password') then  begin
    DateTimePicker1.SetFocus;
    SendMessage(DateTimePicker1.Handle, WM_Char, word(Key), 0);
  end
end;

procedure TForm13.FormCreate(Sender: TObject);
begin
  FormatSettings.DateSeparator := '-';
  FormatSettings.TimeSeparator := ':';
  FormatSettings.ShortDateFormat := 'yyyy-MM-dd';
  FormatSettings.LongDateFormat := 'yyyy-MM-dd';
  FormatSettings.TimeAMString := '';
  FormatSettings.TimePMString := '';
  FormatSettings.ShortTimeFormat := 'hh:nn:ss';
  FormatSettings.LongTimeFormat := 'hh:nn:ss:zzz';
end;