プログラマ専用SNS ミクプラ

コード:

if( FAILED( CoCreateInstance(
			CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
			IID_IGraphBuilder, (void**)&Graph ) ) ||
		FAILED( Graph->QueryInterface(
			IID_IMediaControl, (void**)&Control ) ) ||
		FAILED( Graph->QueryInterface(
			IID_IMediaEvent, (void**)&Event ) ) ||
		FAILED( Graph->QueryInterface(
			IID_IMediaSeeking, (void**)&Seeking ) ) ||
		FAILED( Graph->QueryInterface( 
			IID_IBasicAudio, (void**)&Audio ) )
	) return false;