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;