I want to play video using dxshow, but the method pVideoWindow->put_Owner() returns E_NOINTERFACE. I'm trying to solve this problem in two days, but have not found a solution. Anybody help me ?

Qt Code: 
  1. void UltraVision::PlayVideo()
  2. {
  3. 	// DirectShow interfaces
  4. 	IGraphBuilder *pGraphBuilder;
  5. 	IMediaControl *pMediaControl;
  6. 	IMediaEventEx *pMediaEvent;
  7. 	IVideoWindow *pVideoWindow;
  8. 	IBasicAudio *pBasicAudio;
  9. 	IBasicVideo *pBasicVideo;
  10. 	IMediaSeeking *pMediaSeeking;
  11. 	IMediaPosition *pMediaPosition;
  12. 	IVideoFrameStep *pFrameStep;
  13. 	IBaseFilter *pBaseFilter;
  14. 	IVMRWindowlessControl* pWindowlessControl;
  15.  
  16. 	HRESULT hr;
  17.  
  18. 	QAxWidget* mpVideoPlayer = new QAxWidget( ui.axWidget );
  19.  
  20. 	hr = CoInitialize( NULL ); 
  21. 	hr = CoCreateInstance( CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,IID_IGraphBuilder, (void **) &pGraphBuilder );
  22. 	hr = pGraphBuilder->QueryInterface( IID_IMediaControl, (void**) &pMediaControl );
  23. 	hr = pGraphBuilder->QueryInterface( IID_IMediaEvent, (void **) &pMediaEvent);
  24. 	hr = pGraphBuilder->QueryInterface( IID_IMediaSeeking, (void **) &pMediaSeeking );
  25. 	hr = pGraphBuilder->QueryInterface( IID_IMediaPosition, (void **) &pMediaPosition);
  26. 	hr = pGraphBuilder->QueryInterface( IID_IVideoWindow, (void **) &pVideoWindow );
  27.  
  28. 	if( pVideoWindow )
  29. 	{
  30. 		hr = pVideoWindow->put_Owner( (OAHWND) ui.axWidget->winId() )  );
  31. 		hr = pVideoWindow->put_WindowStyle( WS_CHILD | WS_CLIPCHILDREN );
  32. 	}
  33.  
  34. 	hr = InitWindowlessVMR( (HWND) mpVideoPlayer->winId( ), pGraphBuilder, &pWindowlessControl );
  35.  
  36. 	if( SUCCEEDED( hr ) )
  37. 	{ 
  38. 		// Build the graph. For example:
  39. 		hr = pGraphBuilder->RenderFile( L"E:\\Video\\12\\Spartacus.S03E08.HDTVRip.avi", NULL );
  40. 	}
  41.  
  42.  
  43. 	// Find the native video size.
  44. 	long lWidth, lHeight; 
  45. 	hr = pWindowlessControl->GetNativeVideoSize( &lWidth, &lHeight, NULL, NULL ); 
  46.  
  47. 	if ( SUCCEEDED( hr ) )
  48. 	{
  49. 			RECT rcSrc, rcDest; 
  50. 			// Set the source rectangle.
  51. 			SetRect( &rcSrc, 0, 0, lWidth, lHeight ); 
  52.  
  53. 			// Get the window client area.
  54. 			GetClientRect( (HWND) mpVideoPlayer->winId( ), &rcDest ); 
  55. 			// Set the destination rectangle.
  56. 			SetRect(&rcDest, 1, 1, 558, 349); 
  57.  
  58. 			// Set the video position.
  59. 			hr = pWindowlessControl->SetVideoPosition( &rcSrc, &rcDest ); 
  60.  
  61. 			// Add this code to make the video initially show up once opening the file
  62. 			PAINTSTRUCT ps; 
  63. 			HDC hdc; 
  64. 			RECT rcClient;
  65. 			GetClientRect( (HWND) mpVideoPlayer->winId( ), &rcClient ); 
  66. 			hdc = BeginPaint( (HWND) mpVideoPlayer->winId( ), &ps ); 
  67. 			if( pWindowlessControl != NULL ) 
  68. 			{ 
  69. 				// Find the region where the application can paint by subtracting 
  70. 				// the video destination rectangle from the client area.
  71. 				// (Assume that g_rcDest was calculated previously.)
  72. 				HRGN rgnClient = CreateRectRgnIndirect( &rcClient ); 
  73. 				HRGN rgnVideo = CreateRectRgnIndirect( &rcDest ); 
  74. 				CombineRgn( rgnClient, rgnClient, rgnVideo, RGN_DIFF ); 
  75.  
  76. 				// Paint on window.
  77. 				HBRUSH hbr = GetSysColorBrush( COLOR_BTNFACE ); 
  78. 				FillRgn( hdc, rgnClient, hbr ); 
  79.  
  80. 				// Clean up.
  81. 				DeleteObject( hbr ); 
  82. 				DeleteObject( rgnClient ); 
  83. 				DeleteObject( rgnVideo ); 
  84.  
  85. 				// Request the VMR to paint the video.
  86. 				HRESULT hr = pWindowlessControl->RepaintVideo( (HWND) mpVideoPlayer->winId( ), hdc ); 
  87. 			} 
  88. 	}
  89.  
  90. 	getFrameStepInterface(pGraphBuilder, pFrameStep);
  91.  
  92. 	pMediaControl->Run( );
  93.  
  94. }
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