deshabilitar y habilitar evento onClick de un tcheckbox

[[FGarcia]]

Hola!

Aqui reviviendo este hilo. A ver no entendi. Estoy tratando de implementar el codigo de Roman:

Código Delphi [-]
unit UGeneralDatos;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, ExtCtrls, DBCtrls, Grids, DBGrids, ComCtrls, StdCtrls, Buttons,
  DateUtils;
 
 {Redefinimos el componente TCheckBox para evitar el evento OnClick}
type
  TCheckBox = class(StdCtrls.TCheckBox)
  public
    constructor Create(AOwner: TComponent); override;
  end;
 
{ 
constructor TCheckBox.Create(AOwner: TComponent);
begin
  inherited;
  ClicksDisabled := true;
end;
 }

type
  TfrmGDatos = class(TForm)
    DBGrid1: TDBGrid;
    DBNavigator1: TDBNavigator;
    CheckBox1: TCheckBox;
    CheckBox2: TCheckBox;
    CheckBox3: TCheckBox;
    CheckBox4: TCheckBox;
    CheckBox5: TCheckBox;
    CheckBox6: TCheckBox;
    CheckBox7: TCheckBox;
    CheckBox8: TCheckBox;
    StringGrid1: TStringGrid;
    procedure RadioGroup1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
    procedure bbtnOKClick(Sender: TObject);
    procedure CheckBox1Click(Sender: TObject);
    procedure CheckBox5Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer;
      Rect: TRect; State: TGridDrawState);
    procedure FormCloseQuery(Sender: TObject; var CanClose: Boolean);
  private
    { Private declarations }
      public
    { Public declarations }
  end;
 
var
  frmGDatos: TfrmGDatos;
 
implementation
 
uses UCnx, UHoraFecha, UVarios;
 
{$R *.dfm}
 
{Definimos el constructor del TCheckBox sin evento OnClick}
constructor TCheckBox.Create(AOwner: TComponent);
begin
  inherited;
  ClicksDisabled := true;
end;
 
procedure TfrmGDatos.FormCreate(Sender: TObject);
begin
  
  checkbox1.Checked := true;
  checkbox2.Checked := true;
  checkbox3.Checked := false;
  checkbox4.Checked := false;
  checkbox5.Checked := false;
  checkbox6.Checked := false;
  checkbox7.Checked := true;
  checkbox8.Checked := true;
end;

La pregunta: ¿esta correcto donde implemente el constructor?
La duda: Se sigue comportando igual, el evento OnClick se dispara de todos modos. ¿Donde me perdi?