Converts a UTC QDateTime to a UTC time, measured in seconds since 00:00:00 UTC 1st January 1970 (as returned by time(2)). QDateTime.ToTime_t() returns an unsigned value. This method returns a time_t value, which is signed. name="utcDateTime" date/time. An error occurs if utcDateTime.timeSpec() is not Qt.UTC.
publicstaticToTime_t ( QDateTimeutcDateTime ) : int