URLDownloadToFile函数

Downloads bits from the Internet and saves them to a file.

 

           Syntax:

HRESULT URLDownloadToFile(      
    LPUNKNOWN pCaller,
    LPCTSTR szURL,
    LPCTSTR szFileName,
    DWORD dwReserved,
    LPBINDSTATUSCALLBACK lpfnCB
);

Parameters:
  
   pCaller 
  
  

   Pointer to the controlling 
   
    IUnknown
    interface of the calling Microsoft ActiveX component (if the caller is an ActiveX component). 
  

szURL

Pointer to a string value containing the URL to be downloaded. Cannot be set to NULL.

            szFileName

                            Pointer to a string value containing the name of the file to create for bits that come from the download.

             dwReserved

Reserved. Must be set to 0.

             lpfnCB

Pointer to the caller's IBindStatusCallback interface. URLDownloadToFile calls this interface's IBindStatusCallback::OnProgress method on a connection activity, including the arrival of data. IBindStatusCallback::OnDataAvailable is never called.

 

 

 #include "stdafx.h"
#include <iostream>
#include <UrlMon.h>
#pragma comment(lib, "urlmon.lib")

using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
 //nt * dl = new int;
 HRESULT hr = URLDownloadToFile(0, _T("http://ui.the9.com/wowshell/WoWShell.exe"),_T("D://WoWShell.exe"), 0,NULL); 

if (hr== S_OK)
 {
     cout<< "ok"<< endl;    
 }    
 return 0;
}