This structure is a subheader for the audio header and is usually contained within the MMAUDIOHEADER structure. It contains specific information about the digital audio content including the format of the data representation for the data that it is associated with. It is part of the standard presentation format for audio data and is returned on mmioGetHeader and used on mmioSetHeader when HMMIO refers to an open audio file or open video file when the active track for this file is set to an audio track.
typedef struct _MMXWAV_HEADER { WAVE_HEADER WAVEHeader; /* Mirrors RIFF wave header info. */ XWAV_HEADERINFO XWAVHeaderInfo; /* Additional audio parameters. */ } MMXWAV_HEADER; typedef MMXWAV _ HEADER * PMMXWAV _ HEADER ;