This structure contains fields for the SHC_ENABLE_SYNC message.
typedef struct _PARM_ENSYNC { ULONG ulFunction; /* Handler command function. */ HID hid; /* Handler ID. */ HSTREAM hstream; /* Stream handle instance. */ ULONG ulFlags; /* Sync flags. */ MMTIME mmtimeSync; /* Granularity. */ PSYNC_EVCB pevcbSyncPulse; /* Sync pulse info. */ ULONG ulSyncPulseSem; /* 16 bit semaphore. */ } PARM_ENSYNC; typedef PARM _ ENSYNC FAR * PPARM _ ENSYNC ;