IltmmPlay::GetSubObjectDispatch Example for C
// This function checks if the Lens effect filter is available
// and turns off the effect area (cropping feature)
void TurnOffLensCropping4(IltmmPlay *pPlay)
{
HRESULT hr;
IDispatch *pDisp = NULL;
ILMVLens *pLens = NULL;
// call the Capture object to retrieve the FilterGraph
hr = IltmmPlay__getSubObjectDispatch(pPlay, ltmmPlay_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);
}
}