API读取网页信息

编译成功后执行程序时，注意保持网络连接~~~
#include <iostream.h>
#include <fstream.h>
#include <Windows.h>
#include <wininet.h>
#define MAXBLOCKSIZE 1024
#pragma   comment   (lib,   "wininet.lib")
void download(const char*);

int main(int argc, char* argv[]){

    download("http://zhidao.baidu.com");

return 0 ;

if(argc > 1){
  download((const char*)argv[1]);
}else{
  cout<<"Usage: auto-Update url";
}
return 0;
}


/**
* 执行 文件下载 操作
* @param Url: The target action url 
*
*/
void download(const char *Url)
{
HINTERNET hSession = InternetOpen("RookIE/1.0", INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
if (hSession != NULL)
{
  HINTERNET handle2 = InternetOpenUrl(hSession, Url, NULL, 0, INTERNET_FLAG_DONT_CACHE, 0);
  if (handle2 != NULL)
  {
   cout<<Url<<endl;
   byte Temp[MAXBLOCKSIZE];
   ULONG Number = 1;
   
   ofstream ofs("baidu.txt");
   if(ofs)
   {
    while (Number > 0)
    {
     InternetReadFile(handle2, Temp, MAXBLOCKSIZE - 1, &Number);
     ofs<<Temp;
      
    }
    ofs.close();
   }
   
   InternetCloseHandle(handle2);
   handle2 = NULL;
  }
  InternetCloseHandle(hSession);
  hSession = NULL;
}
}