Wave buffer 構造体

C++

mmsystem.h内

/* wave data block header */
typedef struct wavehdr_tag {
    LPSTR       lpData;                 /* pointer to locked data buffer */
    DWORD       dwBufferLength;         /* length of data buffer */
    DWORD       dwBytesRecorded;        /* used for input only */
    DWORD       dwUser;                 /* for client's use */
    DWORD       dwFlags;                /* assorted flags (see defines) */
    DWORD       dwLoops;                /* loop control counter */
    struct wavehdr_tag FAR *lpNext;     /* reserved for driver */
    DWORD       reserved;               /* reserved for driver */
} WAVEHDR, *PWAVEHDR, NEAR *NPWAVEHDR, FAR *LPWAVEHDR;

/* flags for dwFlags field of WAVEHDR */
#define WHDR_DONE       0x00000001  /* done bit */
#define WHDR_PREPARED   0x00000002  /* set if this header has been prepared */
#define WHDR_BEGINLOOP  0x00000004  /* loop start block */
#define WHDR_ENDLOOP    0x00000008  /* loop end block */
#define WHDR_INQUEUE    0x00000010  /* reserved for driver */