檔案地址為“http://www.baidu.com/xxx.txt”

// readTxt.cpp :Defines the entry point for the console application.
//
 
#include "stdafx.h"
#include <Windows.h>
#include <wininet.h>
#include <string>
using namespace std;
#pragma comment(lib, "wininet.lib")
#define BUF_SIZE 1024
 
LPSTR GetInterNetURLText(LPSTR lpcInterNetURL, char* buff);
 
int _tmain(int argc, _TCHAR* argv[])
{
    char buf[BUF_SIZE] = {0};
    char url[MAX_PATH] = "http://www.baidu.com/xxx.txt";
    GetInterNetURLText(url, buf);
 
    return 0;
}
 
LPSTR GetInterNetURLText(LPSTR lpcInterNetURL, char* buff)
{   
    HINTERNET hSession;   
    LPSTR lpResult = NULL;
    hSession = InternetOpen("WinInet", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);   
    __try
    {       
       if(hSession != NULL)        
       {          
           HINTERNET hRequest;            
           hRequest = InternetOpenUrlA(hSession,lpcInterNetURL, NULL,0, INTERNET_FLAG_RELOAD, 0);        
           __try         
           {                
              if(hRequest != NULL)        
              {           
                  DWORD dwBytesRead;                  
                  char szBuffer[BUF_SIZE] = {0};
 
                  if(InternetReadFile(hRequest, szBuffer, BUF_SIZE, &dwBytesRead))           
                  {                 
                     RtlMoveMemory(buff, szBuffer, BUF_SIZE);   
                     return 0;              
                  }               
              }           
           }__finally     
           {              
              InternetCloseHandle(hRequest);  
           }       
       }   
    }__finally    
    {       
       InternetCloseHandle(hSession);  
    }   
    return lpResult;
}