if (pmk && ppvResult)
    {
        *ppvResult = NULL;

        hr = CreateAsyncBindCtx(0, pbsc, NULL, &pbc);
        if (hr == NOERROR)
        {
            hr = IMoniker_BindToObject(pmk, pbc, NULL, iidResult, ppvResult);
            IBindCtx_Release(pbc);
        }
    }
    return hr;
}

/***********************************************************************
 *           RegisterBindStatusCallback (URLMON.@)
 *
 * Register a bind status callback.
 *
 * PARAMS
 *  pbc           [I] Binding context
 *  pbsc          [I] Callback to register
 *  ppbscPrevious [O] Destination for previous callback
 *  dwReserved    [I] Reserved, must be 0.
 *
 * RETURNS
 *    Success: S_OK.
 *    Failure: E_INVALIDARG, if any argument is invalid, or
 *             E_OUTOFMEMORY if memory allocation fails.
 */
HRESULT WINAPI RegisterBindStatusCallback(
    IBindCtx *pbc,
    IBindStatusCallback *pbsc,
    IBindStatusCallback **ppbscPrevious,
    DWORD dwReserved)
{
    IBindStatusCallback *prev;

    TRACE("(%p,%p,%p,%u)\n", pbc, pbsc, ppbscPrevious, dwReserved);

    if (pbc == NULL || pbsc == NULL)
        return E_INVALIDARG;

    if (SUCCEEDED(IBindCtx_GetObjectParam(pbc, BSCBHolder, (IUnknown **)&prev)))
    {
        IBindCtx_RevokeObjectParam(pbc, BSCBHolder);
        if (ppbscPrevious)
            *ppbscPrevious = prev;
        else
            IBindStatusCallback_Release(prev);
    }

    return IBindCtx_RegisterObjectParam(pbc, BSCBHolder, (IUnknown *)pbsc);
}

/***********************************************************************
 *           RevokeBindStatusCallback (URLMON.@)
 *
 * Unregister a bind status callback.
 *
 *  pbc           [I] Binding context
 *  pbsc          [I] Callback to unregister
 *
 * RETURNS
 *    Success: S_OK.
 *    Failure: E_INVALIDARG, if any argument is invalid, or
 *             E_FAIL if pbsc wasn't registered with pbc.
 */
HRESULT WINAPI RevokeBindStatusCallback(
    IBindCtx *pbc,
    IBindStatusCallback *pbsc)
{
    IBindStatusCallback *callback;
    HRESULT hr = E_FAIL;

	TRACE("(%p,%p)\n", pbc, pbsc);

    if (pbc == NULL || pbsc == NULL)
        return E_INVALIDARG;

    if (SUCCEEDED(IBindCtx_GetObjectParam(pbc, BSCBHolder, (IUnknown **)&callback)))
    {
        if (callback == pbsc)
        {
            IBindCtx_RevokeObjectParam(pbc, BSCBHolder);
            hr = S_OK;
        }
        IBindStatusCallback_Release(pbsc);
    }

    return hr;
}

/***********************************************************************
 *           URLDownloadToFileA (URLMON.@)
 *
 * Downloads URL szURL to rile szFileName and call lpfnCB callback to
 * report progress.
 *
 * PARAMS
 *  pCaller    [I] controlling IUnknown interface.
 *  szURL      [I] URL of the file to download
 *  szFileName [I] file name to store the content of the URL
 *  dwReserved [I] reserved - set to 0
 *  lpfnCB     [I] callback for progress report
 *
 * RETURNS
 *  S_OK on success
 *  E_OUTOFMEMORY when going out of memory
 */
HRESULT WINAPI URLDownloadToFileA(LPUNKNOWN pCaller,
				  LPCSTR szURL,
				  LPCSTR szFileName,
				  DWORD dwReserved,
				  LPBINDSTATUSCALLBACK lpfnCB)
{
    UNICODE_STRING szURL_w, szFileName_w;

    if ((szURL == NULL) || (szFileName == NULL)) {
	FIXME("(%p,%s,%s,%08x,%p) cannot accept NULL strings !\n", pCaller, debugstr_a(szURL), debugstr_a(szFileName), dwReserved, lpfnCB);
	return E_INVALIDARG; /* The error code is not specified in this case... */
    }
    
    if (RtlCreateUnicodeStringFromAsciiz(&szURL_w, szURL)) {
	if (RtlCreateUnicodeStringFromAsciiz(&szFileName_w, szFileName)) {
	    HRESULT ret = URLDownloadToFileW(pCaller, szURL_w.Buffer, szFileName_w.Buffer, dwReserved, lpfnCB);

	    RtlFreeUnicodeString(&szURL_w);
	    RtlFreeUnicodeString(&szFileName_w);
	    
	    return ret;
	} else {
	    RtlFreeUnicodeString(&szURL_w);
	}
    }
    
    FIXME("(%p,%s,%s,%08x,%p) could not allocate W strings !\n", pCaller, szURL, szFileName, dwReserved, lpfnCB);
    return E_OUTOFMEMORY;
}

/***********************************************************************
 *           URLDownloadToFileW (URLMON.@)
 *
 * Downloads URL szURL to rile szFileName and call lpfnCB callback to
 * report progress.
 *
 * PARAMS
 *  pCaller    [I] controlling IUnknown interface.
 *  szURL      [I] URL of the file to download
 *  szFileName [I] file name to store the content of the URL
 *  dwReserved [I] reserved - set to 0
 *  lpfnCB     [I] callback for progress report
 *
 * RETURNS
 *  S_OK on success
 *  E_OUTOFMEMORY when going out of memory
 */
HRESULT WINAPI URLDownloadToFileW(LPUNKNOWN pCaller,
				  LPCWSTR szURL,
				  LPCWSTR szFileName,
				  DWORD dwReserved,
				  LPBINDSTATUSCALLBACK lpfnCB)
{
    HINTERNET hinternet, hcon, hreq;
    BOOL r;
    CHAR buffer[0x1000];
    DWORD sz, total, written;
    DWORD total_size = 0xFFFFFFFF, arg_size = sizeof(total_size);
    URL_COMPONENTSW url;
    WCHAR host[0x80], path[0x100];
    HANDLE hfile;
    static const WCHAR wszAppName[]={'u','r','l','m','o','n','.','d','l','l',0};

    /* Note: all error codes would need to be checked agains real Windows behaviour... */
    TRACE("(%p,%s,%s,%08x,%p) stub!\n", pCaller, debugstr_w(szURL), debugstr_w(szFileName), dwReserved, lpfnCB);

    if ((szURL == NULL) || (szFileName == NULL)) {
	FIXME(" cannot accept NULL strings !\n");
	return E_INVALIDARG;
    }

    /* Would be better to use the application name here rather than 'urlmon' :-/ */
    hinternet = InternetOpenW(wszAppName, INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0);
    if (hinternet == NULL) {
	return E_OUTOFMEMORY;
    }                                                                                                                             

    memset(&url, 0, sizeof(url));
    url.dwStructSize = sizeof(url);
    url.lpszHostName = host;
    url.dwHostNameLength = sizeof(host);
    url.lpszUrlPath = path;
    url.dwUrlPathLength = sizeof(path);

    if (!InternetCrackUrlW(szURL, 0, 0, &url)) {
	InternetCloseHandle(hinternet);
	return E_OUTOFMEMORY;
    }

    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, 0, 0, BINDSTATUS_CONNECTING, url.lpszHostName) == E_ABORT) {
	    InternetCloseHandle(hinternet);
	    return S_OK;
	}
    }
    
    hcon = InternetConnectW(hinternet, url.lpszHostName, url.nPort,
                            url.lpszUserName, url.lpszPassword,
                            INTERNET_SERVICE_HTTP, 0, 0);
    if (!hcon) {
	InternetCloseHandle(hinternet);
	return E_OUTOFMEMORY;
    }
    
    hreq = HttpOpenRequestW(hcon, NULL, url.lpszUrlPath, NULL, NULL, NULL, 0, 0);
    if (!hreq) {
	InternetCloseHandle(hinternet);
	InternetCloseHandle(hcon);
	return E_OUTOFMEMORY;
    }                                                                                                                             

    if (!HttpSendRequestW(hreq, NULL, 0, NULL, 0)) {
	InternetCloseHandle(hinternet);
	InternetCloseHandle(hcon);
	InternetCloseHandle(hreq);
	return E_OUTOFMEMORY;
    }
    
    if (HttpQueryInfoW(hreq, HTTP_QUERY_CONTENT_LENGTH | HTTP_QUERY_FLAG_NUMBER,
		       &total_size, &arg_size, NULL)) {
	TRACE(" total size : %d\n", total_size);
    }
    
    hfile = CreateFileW(szFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
                        FILE_ATTRIBUTE_NORMAL, NULL );
    if (hfile == INVALID_HANDLE_VALUE) {
	return E_ACCESSDENIED;
    }
    
    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, 0, total_size != 0xFFFFFFFF ? total_size : 0,
					   BINDSTATUS_BEGINDOWNLOADDATA, szURL) == E_ABORT) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    CloseHandle(hfile);
	    return S_OK;
	}
    }
    
    total = 0;
    while (1) {
	r = InternetReadFile(hreq, buffer, sizeof(buffer), &sz);
	if (!r) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    
	    CloseHandle(hfile);
	    return E_OUTOFMEMORY;	    
	}
	if (!sz)
	    break;
	
	total += sz;

	if (lpfnCB) {
	    if (IBindStatusCallback_OnProgress(lpfnCB, total, total_size != 0xFFFFFFFF ? total_size : 0,
					       BINDSTATUS_DOWNLOADINGDATA, szURL) == E_ABORT) {
		InternetCloseHandle(hreq);
		InternetCloseHandle(hcon);
		InternetCloseHandle(hinternet);
		CloseHandle(hfile);
		return S_OK;
	    }
	}
	
	if (!WriteFile(hfile, buffer, sz, &written, NULL)) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    
	    CloseHandle(hfile);
	    return E_OUTOFMEMORY;
	}
    }

    if (lpfnCB) {
	if (IBindStatusCallback_OnProgress(lpfnCB, total, total_size != 0xFFFFFFFF ? total_size : 0,
					   BINDSTATUS_ENDDOWNLOADDATA, szURL) == E_ABORT) {
	    InternetCloseHandle(hreq);
	    InternetCloseHandle(hcon);
	    InternetCloseHandle(hinternet);
	    CloseHandle(hfile);
	    return S_OK;
	}
    }
    
    InternetCloseHandle(hreq);
    InternetCloseHandle(hcon);
    InternetCloseHandle(hinternet);
    
    CloseHandle(hfile);

    return S_OK;
}

/***********************************************************************
 *           URLDownloadToCacheFileA (URLMON.@)
 */
HRESULT WINAPI URLDownloadToCacheFileA(LPUNKNOWN lpUnkCaller, LPCSTR szURL, LPSTR szFileName,
        DWORD dwBufLength, DWORD dwReserved, LPBINDSTATUSCALLBACK pBSC)
{
    LPWSTR url = NULL, file_name = NULL;
    int len;
    HRESULT hres;

    TRACE("(%p %s %p %d %d %p)\n", lpUnkCaller, debugstr_a(szURL), szFileName,
            dwBufLength, dwReserved, pBSC);

    if(szURL) {
        len = MultiByteToWideChar(CP_ACP, 0, szURL, -1, NULL, 0);
        url = HeapAlloc(GetProcessHeap(), 0, len*sizeof(WCHAR));
        MultiByteToWideChar(CP_ACP, 0, szURL, -1, url, -1);
    }

    if(szFileName)
        file_name = HeapAlloc(GetProcessHeap(), 0, dwBufLength*sizeof(WCHAR));

    hres = URLDownloadToCacheFileW(lpUnkCaller, url, file_name, dwBufLength*sizeof(WCHAR),
            dwReserved, pBSC);

    if(SUCCEEDED(hres) && file_name)
        WideCharToMultiByte(CP_ACP, 0, file_name, -1, szFileName, dwBufLength, NULL, NULL);

    HeapFree(GetProcessHeap(), 0, url);
    HeapFree(GetProcessHeap(), 0, file_name);

    return hres;
}

/***********************************************************************
 *           URLDownloadToCacheFileW (URLMON.@)
 */
HRESULT WINAPI URLDownloadToCacheFileW(LPUNKNOWN lpUnkCaller, LPCWSTR szURL, LPWSTR szFileName,
                DWORD dwBufLength, DWORD dwReserved, LPBINDSTATUSCALLBACK pBSC)
{
    WCHAR cache_path[MAX_PATH + 1];
    FILETIME expire, modified;
    HRESULT hr;
    LPWSTR ext;

    static WCHAR header[] = {
        'H','T','T','P','/','1','.','0',' ','2','0','0',' ',
        'O','K','\\','r','\\','n','\\','r','\\','n',0
    };

    TRACE("(%p, %s, %p, %d, %d, %p)\n", lpUnkCaller, debugstr_w(szURL),
          szFileName, dwBufLength, dwReserved, pBSC);

    if (!szURL || !szFileName)
        return E_INVALIDARG;

    ext = PathFindExtensionW(szURL);

    if (!CreateUrlCacheEntryW(szURL, 0, ext, cache_path, 0))
        return E_FAIL;

    hr = URLDownloadToFileW(lpUnkCaller, szURL, cache_path, 0, pBSC);
    if (FAILED(hr))
        return hr;

    expire.dwHighDateTime = 0;
    expire.dwLowDateTime = 0;
    modified.dwHighDateTime = 0;
    modified.dwLowDateTime = 0;

    if (!CommitUrlCacheEntryW(szURL, cache_path, expire, modified, NORMAL_CACHE_ENTRY,
                              header, sizeof(header), NULL, NULL))
        return E_FAIL;

    if (lstrlenW(cache_path) > dwBufLength)
        return E_OUTOFMEMORY;

    lstrcpyW(szFileName, cache_path);

    return S_OK;
}

/***********************************************************************
 *           HlinkSimpleNavigateToString (URLMON.@)
 */
HRESULT WINAPI HlinkSimpleNavigateToString( LPCWSTR szTarget,
    LPCWSTR szLocation, LPCWSTR szTargetFrameName, IUnknown *pUnk,
    IBindCtx *pbc, IBindStatusCallback *pbsc, DWORD grfHLNF, DWORD dwReserved)
{
    FIXME("%s\n", debugstr_w( szTarget ) );
    return E_NOTIMPL;
}

/***********************************************************************
 *           HlinkNavigateString (URLMON.@)
 */
HRESULT WINAPI HlinkNavigateString( IUnknown *pUnk, LPCWSTR szTarget )
{
    TRACE("%p %s\n", pUnk, debugstr_w( szTarget ) );
    return HlinkSimpleNavigateToString( 
               szTarget, NULL, NULL, pUnk, NULL, NULL, 0, 0 );
}

/***********************************************************************
 *           GetSoftwareUpdateInfo (URLMON.@)
 */
HRESULT WINAPI GetSoftwareUpdateInfo( LPCWSTR szDistUnit, LPSOFTDISTINFO psdi )
{
    FIXME("%s %p\n", debugstr_w(szDistUnit), psdi );
    return E_FAIL;
}