function DaysBetween(const ANow, AThen: TDateTime): Integer;DescriptionCall DaysBetween to obtain the difference, in days, between two TDateTime values.DaysBetween counts only whole days that have elapsed. Thus, DaysBetween reports the difference between Dec 31, 1999 11:59 PM and Jan 1, 2000 11:58 PM as 0 because the difference is one minute short of an entire day.
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货