This structure is a subheader of the audio header and is usually contained within the MMXWAV_HEADER structure. It contains information about the length of the standard presentation format for audio data and is returned on mmioGetHeader and used on mmioSetHeader when the HMMIO refers to an open audio or to an open movie file when the active track for this file is set to an audio track.
typedef struct _XWAV_HEADERINFO {
ULONG ulAudioLengthInMS; /* Audio length in milliseconds. */
ULONG ulAudioLengthInBytes; /* Audio length in bytes. */
PVOID pAdditionalInformation; /* Pointer to specific info. */
} XWAV_HEADERINFO;
typedef XWAV _ HEADERINFO * PXWAV _ HEADERINFO ;