This structure contains fields for the SHC_DISABLE_SYNC message.
typedef struct _PARM_DISSYNC {
  ULONG       ulFunction;  /*  Handler command function. */
  HID         hid;         /*  Handler ID. */
  HSTREAM     hStream;     /*  Handle of stream instance. */
} PARM_DISSYNC;
typedef   PARM _ DISSYNC   FAR   * PPARM _ DISSYNC ;