This structure contains fields for the SMH_REPORTEVENT message.
typedef struct _PARM_EVENT { ULONG ulFunction; /* SMH command function. */ HID hid; /* Handler ID. */ HEVENT hevent; /* Explicit events only. */ PEVCB pevcbEvent; /* Event status and HSTREAM. */ } PARM_EVENT; typedef PARM _ EVENT FAR * PPARM _ EVENT ;