[Lazarus] DateDif function needed

John Landmesser JohnML at online.de
Mon Nov 11 16:46:43 CET 2013

That's what i realized until now::

Quote of lhelp:
"MonthsBetween returns the number of whole months between ANow and 
AThen. This number is an approximation, based on an average number of 
days of 30.4375

per month (average over 4 years). This means the fractional part of a 
month is dropped."

MonthsBetween('01.01.2000', '01.03.2000') = 1(!!)

This wrong(!!) result is according to the explanation in the lhelp file, 
but this function is useless if you have leapyears in your period.


You can't write a DateDif function with the functions in DateUtils.pas ?!!

Giving up and using the Jedi DateDif function.

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