C / C++ / MFC

// incorporation dans le filter graph (pour l'instant n'importe où)
// du filtre Video Renderer de remplacement
HRESULT CPlayerDoc::AddNewVideoRendererToGraph()
{
HRESULT  hr ;

IBaseFilter *pFilter=NULL;

hr = CoCreateInstance(CLSID_ARST_VIDEORenderer, NULL, CLSCTX_INPROC_SERVER, IID_IBaseFilter, (LPVOID *)&pFilter) ;
if (FAILED(hr))
{
  switch (hr)
  {
    case E_INVALIDARG : TRACE("INVALID_ARG\n");break;
    case REGDB_E_CLASSNOTREG : TRACE ("REGDB_E_CLASSNOTREG\n");break;
    case CLASS_E_NOAGGREGATION : TRACE ("CLASS_E_NOAGGREGATION\n");break;
    default:break;
  }
  return E_FAIL ;
}

hr = m_pGraph->AddFilter(pFilter, L"ARST VIDEO RENDERER") ;
if (FAILED(hr))
{
  pFilter->Release();
  return E_FAIL ;
}
    
return S_OK ;
}

BOOL CPlayerDoc::OnOpenDocument(LPCTSTR lpszPathName)
{
    WCHAR	wPath[MAX_PATH];

    DeleteContents();

    if ( !CreateFilterGraph() ) 
	{
        AfxMessageBox(IDS_CANT_INIT_QUARTZ);
        return FALSE;
    }

    ::MultiByteToWideChar( CP_ACP, 0, lpszPathName,
                         -1, wPath, MAX_PATH );


	// ajoute le filtre de rendu avant de faire le RenderFile,
	// cela permet au FilterGraph de le prendre comme filtre de rendu
	// au lieu d'appliquer le Video Renderer ActiveMovie.
	AddNewVideoRendererToGraph();

    if (FAILED( m_pGraph->RenderFile(wPath, NULL) )) 
	{
        AfxMessageBox(IDS_CANT_RENDER_FILE);
        return FALSE;
    }

<br />
CObject *pObj = new CObject(); // Pointer to some object<br />
<br />
// Where hWnd is the window handle to post the message to<br />
::PostMessage(hWnd,MESSAGE_ID,(WPARAM)pObj,NULL);<br />

<br />
// Message map entry<br />
ON_MESSAGE(MESSAGE_ID,OnMessage)<br />
<br />
// Message handler<br />
LRESULT CSomeClass::OnMessage(WPARAM wParam, LPARAM lParam) {<br />
// Cast wParam back to an object pointer<br />
CObject *pObj = (CObject *)wParam;<br />
// Now you can do whatever you want with the object pointer<br />
}<br />