how to find date time diffrence between date time in format "yyyy-mm-dd hh:mm:ss" using QDateTime ?

[Qt embedded developer]

Can any body help me to get current date time in format like yyyy-mm-dd hh:mm:ss for example :"2022-11-14 09:34:07".

i want to also find difference between current date time and older date time. so if anybody know how to find it then please let me know with example.

[J.Hilk]

@Qt-embedded-developer

     QDateTime dt1 = QDateTime::fromString("2022-11-14 09:34:07", "yyyy-MM-dd hh:mm:ss");
     QDateTime dt2 = QDateTime::fromString("2022-11-14 12:17:54", "yyyy-MM-dd hh:mm:ss");
     
     qint64 secondsbetweenDateTime = dt1.secsTo(dt2);

[Qt embedded developer]

QDateTime date = QDateTime::currentDateTime();
    QString formattedTime = date.toString("yyyy-MM-dd hh:mm:ss");

[Bonnie]

1. Edit: sorry wrong understanding, I see you've already figured it out.
2. What kind of difference do you want? There is QDateTime::secsTo that returns the number of seconds from a datetime to another

[Qt embedded developer]

@Bonnie Hi want to find difference between date time

i.e. difference between 2022-11-14 09:34:07 and 2022-11-14 12:17:54

how many years, months, days, hours , seconds and millisecond get spent between this dates ?

[Bonnie]

@Qt-embedded-developer As I posted, there are secsTo in QDateTime, and also msecsTo and daysTo.
Others you would need to calculate them by yourself depending on the results of the above functions.

[J.Hilk]

@Qt-embedded-developer

     QDateTime dt1 = QDateTime::fromString("2022-11-14 09:34:07", "yyyy-MM-dd hh:mm:ss");
     QDateTime dt2 = QDateTime::fromString("2022-11-14 12:17:54", "yyyy-MM-dd hh:mm:ss");
     
     qint64 secondsbetweenDateTime = dt1.secsTo(dt2);