delphi webbrowser 获取网页源码

//前面要加几个pas单元
uses Registry,ShellApi, WinInet,ShlObj,ComObj;
//========================================删COOKIES==========================
procedure DelRegCache;
var
       reg:TRegistry;
begin
       reg:=Tregistry.create;
       reg.RootKey:=HKEY_CURRENT_USER;
       reg.DeleteKey(‘Software\Microsoft\Internet Explorer\TypedURLs‘);
       reg.Free;
end;
function GetCookiesFolder:string;
var
        pidl:pItemIDList;
        buffer:array [ 0..255 ] of char ;
begin
       SHGetSpecialFolderLocation(
         application.Handle , CSIDL_COOKIES, pidl);
       SHGetPathFromIDList(pidl, buffer);
       result:=strpas(buffer);
end;
function ShellDeleteFile(sFileName: string): Boolean;
var
      FOS: TSHFileOpStruct;
begin
       FillChar(FOS, SizeOf(FOS), 0); {记录清零}
       with FOS do
       begin
           wFunc := FO_DELETE;//删除
           pFrom := PChar(sFileName);
           fFlags := FOF_NOCONFIRMATION;
       end;
       Result := (SHFileOperation(FOS) = 0);
end;
//删除cookies
procedure DelCookie;
var
       dir:string;
begin
      try
       InternetSetOption(nil, INTERNET_OPTION_END_BROWSER_SESSION, nil, 0);
       dir:=GetCookiesFolder;
       ShellDeleteFile(dir+‘\*.txt‘+#0);        //网上很多代码这里没有加最后的#0，在xp下经测试会报错
      except
       abort;
      end;
end;
//========================================删COOKIES=========================

 USES mshtml

 procedure TForm1.WebBrowser1DocumentComplete(ASender: TObject;
 2   const pDisp: IDispatch; var URL: OleVariant);
 3 var
 4   i:Integer;
 5   iall : IHTMLElement;
 6 begin
 7   if WebBrowser1.Application = pDisp then
 8     begin
 9       Memo1.Clear;
10       if Assigned(WebBrowser1.Document) then
11         begin
12           iall := (WebBrowser1.Document AS IHTMLDocument2).body;
13           while iall.parentElement <> nil do
14           begin
15             iall := iall.parentElement;
16           end;
17           Memo1.Text := Memo1.Text+iall.outerHTML;
18         end;
19     end;
20 end;