用InternetOpen下载小文件 vc c++

文章改自：

http://hi.baidu.com/hacknothack/blog/item/4ca77710bc8e97fdc3ce79ad.html

使用vc6.0通过

 

view plain copy to clipboard print ? #include "stdafx.h"  #include<windows.h>  #include<wininet.h>  #include<iostream.h>  #pragma comment(lib,"wininet.lib")  void main()  {        DWORD byteread=0;      char buffer[100];      memset(buffer,0,100);      HINTERNET internetopen;        internetopen=InternetOpen("Testing",INTERNET_OPEN_TYPE_PRECONFIG,NULL,NULL,0);      if (internetopen==NULL)      {           cout<<"Internet open failed!"<<endl;          return;      }        HINTERNET internetopenurl;      internetopenurl=InternetOpenUrl(internetopen,"http://dt.163.com/images/news/0605/news02053101_5.jpg",NULL,0,INTERNET_FLAG_RELOAD,0);         if (internetopenurl==NULL)      {           cout<<"Internet open url failed!"<<endl;           goto there;      }        BOOL hwrite;      DWORD written;      HANDLE createfile;      createfile=CreateFile("c://sss.jpg",GENERIC_WRITE,0,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0);      if (createfile==INVALID_HANDLE_VALUE)      {            cout<<"Create File failed!"<<endl;          goto next;      }        BOOL internetreadfile;      while(1)      {          internetreadfile=InternetReadFile(internetopenurl,buffer,sizeof(buffer),&byteread);          if(byteread==0)                break;          hwrite=WriteFile(createfile,buffer,sizeof(buffer),&written,NULL);          if (hwrite==0)          {              cout<<"Write to file failed!"<<endl;              goto here;          }      }        cout<<"Finished downloading!"<<endl;    here:      CloseHandle(createfile);  next:       InternetCloseHandle(internetopenurl);  there:      InternetCloseHandle(internetopen);    }