Implement the ibindstatuscallback interface in C language to achieve download with progress

# Include <stdio. h> # Include <Urlmon. h> # Pragma Comment (Lib, "urlmon. lib ") Hresult (stdmethodcalltype QueryInterface) (ibindstatuscallback * This,  /*  [In]  */  Refiid riid,  /*  [Iid_is] [out]  */   Void ** Ppvobject ){ Return  E_notimpl;} ulong (stdmethodcalltype addref) (ibindstatuscallback * This ){  Return  E_notimpl;} ulong (stdmethodcalltype release) (ibindstatuscallback * This ){  Return  E_notimpl;} hresult (stdmethodcalltype onstartbinding) (ibindstatuscallback * This,  /*  [In]  */ DWORD dwreserved,  /*  [In]  */ Ibinding * PIB ){  Return  E_notimpl;} hresult (stdmethodcalltype getpriority) (ibindstatuscallback * This,  /*  [Out]  */ Long * Pnpriority ){  Return E_notimpl;} hresult (stdmethodcalltype onlowresource) (ibindstatuscallback * This,  /*  [In]  */  DWORD reserved ){  Return  E_notimpl;} hresult (stdmethodcalltype onprogress) (ibindstatuscallback * This,  /*  [In]  */  Ulong ulprogress,  /* [In]  */  Ulong ulprogressmax,  /*  [In]  */  Ulong ulstatuscode,  /*  [In]  */  Lpcwstr szstatustext ){  If (Ulprogress> 0  ) {Printf (  " Downloaded % d of % d bytes \ n  "  , Ulprogress, ulprogressmax); fflush (stdout );}  Return  S_ OK;} hresult (stdmethodcalltype onstopbinding) (ibindstatuscallback * This,  /*  [In]  */  Hresult,  /*  [Unique] [in]  */  Lpcwstr szerror ){ Return  E_notimpl;} hresult (stdmethodcalltype getbindinfo) (ibindstatuscallback * This,  /*  [Out]  */ DWORD * Grfbindf,  /*  [Unique] [out] [in]  */ Bindinfo * Pbindinfo ){  Return  E_notimpl;} hresult (stdmethodcalltype ondataavailable) (ibindstatuscallback *This,  /*  [In]  */  DWORD grfbscf,  /*  [In]  */  DWORD dwsize,  /*  [In]  */ Formatetc * Pformatetc,  /*  [In]  */ Stgmedium *Pstgmed ){  Return  E_notimpl;} hresult (stdmethodcalltype onobjectavailable) (ibindstatuscallback * This,  /*  [In]  */  Refiid riid,  /*  [Iid_is] [in]  */ Iunknown * Punk ){  Return  E_notimpl ;}  Static  Const Ibindstatuscallbackvtbl ibindstatuscallback_vtbl = {QueryInterface, addref, release, onstartbinding, getpriority, onlowresource, onprogress, onstopbinding, getbindinfo, ondataavailable, onobjectavailable };  Int Main ( Int Argc, Char * Argv []) {hresult hr; ibindstatuscallback mycallback; mycallback. lpvtbl = (Ibindstatuscallbackvtbl *)& Ibindstatuscallback_vtbl; HR = Urldownloadtofile (null, " Http://www.baidu.com/index.php  " , "  Index. php  " , 0 ,& Mycallback );  If (HR! = S_ OK) {printf (  "  Error: % x \ n  "  , HR );}  Return   0 ;} 

Girl don't cry (QQ: 191035066) @ 2012-05-02 16:05:03 @ http://www.cnblogs.com/nbsofer