DMUS_EVENTHEADER

The DMUS_EVENTHEADER structure precedes and describes an event in a port buffer.

typedef struct _DMUS_EVENTHEADER {
    DWORD           cbEvent;
    DWORD           dwChannelGroup;
    REFERENCE_TIME  rtDelta;
    DWORD           dwFlags;
} DMUS_EVENTHEADER, *LPDMUS_EVENTHEADER;

Members

cbEvent

Number of bytes in the event.

dwChannelGroup

Group to which the event belongs.

rtDelta

Offset from the start time of the buffer.

dwFlags

Set to DMUS_EVENT_STRUCTURED if the event is parsable MIDI data.

Remarks

The Pshpack4.h header file is included before the declaration of this structure to turn off automatic alignment of structures so that the data immediately follows the header. (For more information, see the comments in Pshpack4.h.) Poppack.h is then included to turn alignment back on, and the entire structure (header plus event) is padded to an 8-byte boundary.

Requirements

  Windows NT/2000: Requires Windows 2000.
  Windows 95/98: Requires Windows 95 or later. Available as a redistributable for Windows 95.
  Header: Declared in dmusbuff.h.

See Also

IDirectMusicBuffer::GetNextEvent, IDirectMusicBuffer::PackStructured, IDirectMusicBuffer::PackUnstructured