	err = QTCopyAtomDataToPtr( videoFilter,			// atom container containing the leaf atom
							   effectTypeAtom,		// leaf atom who's data will be copied
							   false,				// copy fewer bytes than the number of bytes specified by the size parameter?
							   sizeof(effectType), 	// size
							   &effectType,			// target buffer pointer
							   NULL );				// returned actual size; NULL to ignore