IltmmConvert::GetSubObjectDispatch Example for C

This function checks if the Lens effect filter is available and turns off the effect area (cropping feature).

void IltmmConvert_GetSubObjectDispatch_Example (IltmmConvert* pConvert) 
{ 
   HRESULT hr;  
   IDispatch *pDisp = NULL;  
   ILMVLens *pLens = NULL;  
 
   // call the Capture object to retrieve the FilterGraph 
   hr = IltmmConvert_GetSubObjectDispatch(pConvert, ltmmConvert_Object_SelVideoProcessor, &pDisp);  
 
   if(SUCCEEDED(hr))  
   { 
      hr = IDispatch_QueryInterface(pDisp, &IID_ILMVLens, (void**)&pLens);  
 
      if(SUCCEEDED(hr))  
      { 
         ILMVLens_put_EffectAreaEnabled(pLens, VARIANT_FALSE);  
         ILMVLens_Release(pLens);  
      } 
 
      IDispatch_Release(pDisp);  
   } 
} 

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