以前的笔记或摘录：Get Listbox Items from a TWebBrowser Document?

 //Add MSHTML to your uses clause
//Add a TWebBrowser
//Add two buttons
//Add a ComboBox

//////////////////////////////////////////////////////////////////////////////
function IsSelectElement(eleElement: IHTMLElement): Boolean;
  //////////////////////////////////////////////////////////////////////////////
var
  selElement: IHTMLSelectElement;
begin
  Result := False;
  try
    selElement := eleElement as IHTMLSelectElement;
  except
    Exit;
  end;
  Result := True;
end;

///////////////////////////////////////////////////////////////////////////////
procedure GetListBoxOptions(Web1: TWebBrowser;
  strListBoxName: string;
  intInstance: Integer;
  tslLines: TStrings;
  out intSelected: Integer);
  ///////////////////////////////////////////////////////////////////////////////
var
  eleChild: IHTMLElement;
  eleElement: IHTMLElement;
  colGrandParents: IHTMLElementCollection;
  colParents: IHTMLElementCollection;
  selElement: IHTMLSelectElement;
  intCount: Integer;
  intG: Integer;
  intGMax: Integer;
  intP: Integer;
  intPMax: Integer;
  Document: IHTMLDocument2;
begin
  tslLines.Clear;
  intSelected := -1;
  intCount    := -1;

  //Magic declarations
  Document := Web1.Document as IHTMLDocument2;
  if Document = nil then Exit;

  colGrandParents := Document.All;
  if colGrandParents = nil then Exit;

  intGMax := colGrandParents.Length - 1;
  for intG := 0 to intGMax do
  begin
    eleElement := colGrandParents.Item(intG, '') as IHTMLElement;
    if IsSelectElement(eleElement) then
    begin
      selElement := eleElement as IHTMLSelectElement;
      if selElement.Name = strListBoxName then
      begin
        //Found a list box with the correct name.
        Inc(intCount);
        if intCount = intInstance then
        begin
          //Found the instance with the correct name.
          intSelected := selElement.selectedIndex;
          colParents  := eleElement.children as IHTMLElementCollection;
          intPMax  := colParents.Length - 1;
          for intP := 0 to intPMax do
          begin
            eleChild := colParents.Item(intP, '') as IHTMLElement;
            tslLines.Add(eleChild.InnerText);
          end;
        end;
      end;
    end;
  end;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
  WebBrowser1.Navigate('http://www.swissdelphicenter.ch/torry');
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  intSelected: Integer;
begin
  ComboBox1.Text := '';
  GetListBoxOptions(WebBrowser1, 'select', 0, ComboBox1.Items, intSelected);
  if intSelected > -1 then
  begin
    ComboBox1.Text := ComboBox1.Items[intSelected];
  end;
end;