title: Filtering without showing filter
body: <p>I have a form where I have a series of buttons that the user can click to filter records i a cxGrid
  This is working OK but I would like to filter without showing the actual filterbar.
  Is that possible in any way? - I haven't been able to figure out how.
  I have a button with an * to reset the filter so I don't need the filterbar</p>
  
  <pre><code>procedure TfrmJsCompanies.ButtonClick(Sender: TObject);
  var
    ButtonValue: char;
    FilterString: string;
  begin
    ButtonValue := (Sender as TcxButton).Caption[1];
    FilterString := ButtonValue + '%';
    with cxDbView1.DataController.Filter.Root do
      begin
        Clear;
        BoolOperatorKind := fboOr;
        AddItem(colCompany_Name, foLike, FilterString, FilterString);
      end;
    cxDbView1.DataController.Filter.Active := True;
    ActiveControl := grdCompanies;
  end;
  </code></pre>