1、计算两个日期天数差
QDateTime time1 = QDateTime::fromString("2020-11-26 16:40:02", "yyyy-MM-dd hh:mm:ss");
//QDateTime time2 = QDateTime::fromString("2020-11-26 16:43:02", "yyyy-MM-dd hh:mm:ss");
QDateTime time2 = QDateTime::currentDateTime();
int days = time1.dayTo(tim2);
qDebug() << "time2 - time1=" << days ;
2、计算两个日期分钟差
QDateTime time1 = QDateTime::fromString("2020-11-26 16:40:02", "yyyy-MM-dd hh:mm:ss");
QDateTime time2 = QDateTime::fromString("2020-11-26 16:43:02", "yyyy-MM-dd hh:mm:ss");
int minutes = time1.secsTo(tim2);
qDebug() << "time2 - time1=" << days ;