请老师看这样的代码，行么？

nopain

1、可以。
2、先转化为当日以来的秒数，人啊后相减。

Vars
    Numeric FirstTotalSecs;
    Numeric FirstHours;
    Numeric FirstMinutes;
    Numeric FirstSeconds;
Begin
    FirstTime = CurrentTime;
    FirstHours = IntPart(FirstTime*100);
    FirstMinutes = Round((FirstTime*100-FirstHours)*100,0);
    FirstSeconds = Round(((FirstTime*100-FirstHours)*100-FirstMinutes)*100,0);
    FirstTotalSecs= FirstHours*3600 + FirstMinutes*60+FirstSeconds;
end