Calculates the difference in time between end and begin. The #GTimeSpan that is returned is effectively end - begin (ie: positive if the first parameter is larger).
a #GDateTime
the difference between the two #GDateTime, as a time span expressed in microseconds.
Calculates the difference in time between end and begin. The #GTimeSpan that is returned is effectively end - begin (ie: positive if the first parameter is larger).