An event that is called after the value of underlying cell is changed by the user.

property OnCheckedChanged: TNxCellNotifyEvent read FOnCheckedChanged write FOnCheckedChanged;

Example

procedure TForm1.NxCheckBoxColumn61CheckedChanged(Sender: TObject; ACol, ARow: Integer);
begin
  Caption := Format('OnCheckedChanged for %d, %d. New value is: ', [ACol, ARow, NextGrid61.Cell[ACol, ARow].AsString]);
end;