// http 链接变量
	CHttpConnection * m_http;

			CInternetSession CIS;
			CString strPingBaidu;
			strPingBaidu = "ping.baidu.com";
			CString strPingPath;
			strPingPath = "ping/RPC2";
			pdlg->m_http = CIS.GetHttpConnection(strPingBaidu) ;

			CHttpFile * pHttpFile = NULL;
			
			/*
			CHttpFile* OpenRequest(
				LPCTSTR pstrVerb,//get or post .A pointer to a string containing the verb to use in the request. If NULL, "GET" is used.
				LPCTSTR pstrObjectName,//提交站点内地址
				LPCTSTR pstrReferer = NULL,//请求参数字符串
				DWORD_PTR dwContext = 1,//返回状态码
				LPCTSTR* ppstrAcceptTypes = NULL,//返回的字符串
				LPCTSTR pstrVersion = NULL,//A pointer to a string defining the HTTP version. If NULL, "HTTP/1.0" is used.
				DWORD dwFlags = INTERNET_FLAG_EXISTING_CONNECT 
				);
				*/
			pHttpFile = pdlg->m_http->OpenRequest(CHttpConnection::HTTP_VERB_POST,
				strPingPath,//"test/test.php",
				NULL,
				1,
				NULL,
				NULL,
				INTERNET_FLAG_EXISTING_CONNECT);

			//发送header

			//pHttpFile->AddRequestHeaders("Content-Type:application/x-www-form-urlencoded"); 
			//pHttpFile->AddRequestHeaders("Accept:*/*");
			/*
			POST /ping/RPC2 HTTP/1.0
			User-Agent: request
			Host: ping.baidu.com
			Content-Type: text/xml
			Content-Length: 511
			*/
			pHttpFile->AddRequestHeaders("POST /ping/RPC2 HTTP/1.0");
			pHttpFile->AddRequestHeaders("User-Agent: request");
			pHttpFile->AddRequestHeaders("Host: ping.baidu.com");
			pHttpFile->AddRequestHeaders("Content-Type: text/xml");

			//发送请求
			
			//这个是post的
			CString strBlogName,strBlogIndexURL,strNewArticleURL,strRssURL;
			strBlogName =  pdlg->m_CtrlRequestURLInfo.GetItemText(j,1);
			strBlogIndexURL = pdlg->m_CtrlRequestURLInfo.GetItemText(j,1);
			strNewArticleURL = strURL;
			strRssURL = "";

			CString strPost;
			strPost = GetPingCString(strBlogName,strBlogIndexURL,strNewArticleURL,strRssURL);
			//strPost = pdlg->GetPingCString("d","d","d","d");	//post的数据
			//strPost = "sdafdfsadf";	//post的数据
			//pHttpFile->SendRequest(NULL,0,(LPVOID)(LPCTSTR)strPost,strPost.GetLength()); 	
			
			//if (pHttpFile->SendRequest(NULL,0,NULL,0))
			if(pHttpFile->SendRequest(NULL,0,(LPVOID)(LPCTSTR)strPost,strPost.GetLength()))
			{
				//成功
				DWORD   retcode; 
				pHttpFile->QueryInfoStatusCode(retcode);
				CString strReturn;
				if (retcode == 200)
				{
					//一行一行的读出来
					CString strLine;
					while(pHttpFile->ReadString(strLine))
					{
						strReturn = strReturn + strLine + "\n";
					
					}
					pdlg->AddStatus(strReturn);
					//显示出结果
					if (strReturn.Replace("0","ok")==1)
					{
						//能替换一个，说明返回的是0，也就是说提交成功了
						pdlg->m_CtrlBaiduPing.SetItemText(pdlg->m_CtrlBaiduPing.GetItemCount()-1,2,"是");
						pdlg->AddStatus("Ping百度成功");

					}
					else if (strReturn.Replace("1","ok")==1)
					{
						pdlg->AddStatus("Ping百度失败");
					}
					//pdlg->AddStatus(strReturn);
					//AfxMessageBox(strReturn);
				}

			}
			else
			{
				//失败
				pdlg->AddStatus("send request 失败");		
			}

自己自定义的一个函数

CString GetPingCString(CString blogname, CString blogindexurl, CString newarticleurl, CString rssurl)
{
	/*
	POST /ping/RPC2 HTTP/1.0
	User-Agent: request
	Host: ping.baidu.com
	Content-Type: text/xml
	Content-Length: 511
	weblogUpdates.extendedPing百度的空间http://hi.baidu.com/baidu/http://baidu.com/blog/example.html
		http://hi.baidu.com/baidu/rss
	
		
		
	*/
	
 CString strReturn;
 strReturn = 
 strReturn = "<?xml version=\"1.0\" encoding=\"utf-8\"?>";
 strReturn = strReturn + "<methodCall><methodName>weblogUpdates.extendedPing</methodName><params><param><value><string>" + blogname + \
 "</string></value></param><param><value><string>" + blogindexurl + "</string></value></param><param><value><string>" + newarticleurl +\
 "</string></value></param><param><value><string>" + rssurl + "</string></value></param></params></methodCall>";
 return strReturn;
}