Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

uses inifiles;

 {....}

 var
   i: Integer;
   ini: TIniFile;

 { 
  This tip saves all items with the checked/unchecked states 
  to an ini file. 

  Dieser Tip speichert alle Items mit dem checked/unchecked Zustand 
  in eine INI Datei. 
}


   //Save 

procedure TForm1.Button1Click(Sender: TObject);
 begin
   ini := TIniFile.Create('checklistbox.ini');
   try
     for i := 0 to Checklistbox1.Items.Count - 1 do
       ini.WriteBool('items', Checklistbox1.Items[i], Checklistbox1.Checked[i]);
   finally
     ini.Free;
   end;
 end;


 //Load 

procedure TForm1.Button2Click(Sender: TObject);
 begin
   ini := TIniFile.Create('checklistbox.ini');
   try
     ini.ReadSection('items', Checklistbox1.Items);
     for i := 0 to Checklistbox1.Items.Count - 1 do
       CheckListbox1.Checked[i] := ini.ReadBool('items', Checklistbox1.Items[i], False);
   finally
     ini.Free;
   end;
 end;