我在网上下的一个源码（已经作了删减)，用了indy控件的IdCookieManager和
IdHTTP。有点问题请求指点

void __fastcall TForm1::IdCookieManager1NewCookie(TObject *ASender,
      TIdCookieRFC2109 *ACookie, bool &VAccept)
{
    VAccept=true;    
}

void __fastcall TForm1::Button1Click(TObject *Sender)
{              
                String UserName=Edit2->Text.Trim();
                String UserPass=Edit3->Text.Trim();
                TStringList *sl=new TStringList();
                sl->Add("username="+UserName);
                sl->Add("password="+UserPass);
                sl->Add("submit=登  录");
                TStringStream * returnStr = new TStringStream("");
                try
                {
                        IdHTTP->Post(LoginUrl,sl,returnStr);
                }
                catch(...)
                {
                }
                  //DONE:验证登录是否成功
                String SendResult=returnStr->DataString;
                RichEdit1->Lines->Add(SendResult);
                Edit1->Text=AnsiString(IdHTTP->ResponseCode);
                 
               if(SendResult.AnsiPos("欢迎您来到网易"))
//IdHTTP->ResponseCode返回的是200，说明登录成功，但是没有"欢迎您来到网易"
//的提示语句，而通过163.com网站登陆后，在页面上有"欢迎您来到网易"，为何？

                {
                        Edit1->Text="登录成功";

                }

                  
        sl->Clear();
        sl->Add("send=1");
        sl->Add("phone="+MemoPhone->Text);//手机号
        sl->Add("message="+MemoMsg->Text);//短消息
        try
        {
            IdHTTP->Post(SendSmsUrl,sl,returnStr);
        }
        catch(...)
        {
                //
        }
         SendResult=returnStr->DataString;
         RichEdit1->Lines->Add(SendResult);
         Edit1->Text=AnsiString(IdHTTP->ResponseCode);
//出现302 - Moved Temporarily错误，无法发送短消息
        delete returnStr;
        delete sl;
        sl=NULL;
 
}

不知以上什么原因造成，另外是否IdHTTP的Request属性还需要特别设置