网上方法一：(可获取，但不完全)

 引用mshtml;

   IHTMLDocument(wb1.Document).cooke; 

网上方法二：（获取不到！）

引用winnet,使用InternetGetCookieEx

function GetCookie(url: string): string;
const
  INTERNET_COOKIE_HTTPONLY     = $00002000;
  INTERNET_COOKIE_THIRD_PARTY  = $00000010;
  INTERNET_FLAG_RESTRICTED_ZONE= $00020000;
var
  hModule:THandle;
  InternetGetCookieEx:function(lpszUrl, lpszCookieName,lpszCookieData: PChar; var lpdwSize: DWORD;dwFlags:DWORD;lpReserved: Pointer): BOOL;StdCall;
  CookieSize:DWORD;
  cookiedata:PWideChar;
  thebool:bool;
begin
  result := '';
  hModule:=GetModuleHandle('wininet.dll');
  if hModule<>0 then
  begin
    @InternetGetCookieEx:=GetProcAddress(hModule,'InternetGetCookieExW');
    if @InternetGetCookieEx<>nil then
    begin
      CookieSize:=10240;
      Cookiedata := AllocMem(CookieSize);
      thebool:=InternetGetCookieEx(PWideChar(url),nil,CookieData,CookieSize,INTERNET_COOKIE_HTTPONLY,nil);
      if thebool then result := CookieData;
      FreeMem(Cookiedata);
    end;
    FreeLibrary(hModule);
  end;
end;

方法三：

引用winnet,直接调用InternetGetCookie

function GetWBCookies(URL: string): string;
var
  data : array[0..10240] of Byte;
  datalen : cardinal;
begin
  Result  := '';
  datalen := sizeof(data);
  if InternetGetCookie(PChar(URL), nil, @data,datalen) then
    Result := PChar(@data);
end;