// This function checks if the Lens effect filter is available // and turns off the effect area (cropping feature) void TurnOffLensCropping(IltmmPlay *pPlay) { HRESULT hr; IDispatch *pDisp = NULL; ILMVLens *pLens = NULL; // call the Capture object to retrieve the video processors hr = pPlay->GetSubObjectDispatch( ltmmPlay_Object_SelVideoProcessor, &pDisp); if(SUCCEEDED(hr)) { // see if the selected processor is the Lens Effect processor hr = pDisp->QueryInterface(IID_ILMVLens, (void**)&pLens); if(SUCCEEDED(hr)) { // disable the effect pLens->put_EffectAreaEnabled(VARIANT_FALSE); // release the object pLens->Release(); } // release the subobject pDisp->Release(); } }