Incrementing DateTime variable.

[graemejc]

There are lots of Inc... functions to allow me to increment a DateTime variable. But is there a function that allows me to increment by a number of days or years or milliseconds as I see fit? I can write one, but hoping it's been done before. Can't find any though.

[wp]

In DateUtils:

Code: Pascal  [Select][+][-]

1. { ---------------------------------------------------------------------
2.     Increment/decrement functions.
3.   ---------------------------------------------------------------------}
4.  
5. Function IncYear(const AValue: TDateTime; const ANumberOfYears: Integer ): TDateTime;
6. Function IncYear(const AValue: TDateTime): TDateTime; // ; const ANumberOfYears: Integer = 1)
7. // Function IncMonth is in SysUtils
8. Function IncWeek(const AValue: TDateTime; const ANumberOfWeeks: Integer): TDateTime;
9. Function IncWeek(const AValue: TDateTime): TDateTime; // ; const ANumberOfWeeks: Integer = 1)
10. Function IncDay(const AValue: TDateTime; const ANumberOfDays: Integer): TDateTime;
11. Function IncDay(const AValue: TDateTime): TDateTime; //; const ANumberOfDays: Integer = 1)
12. Function IncHour(const AValue: TDateTime; const ANumberOfHours: Int64): TDateTime;
13. Function IncHour(const AValue: TDateTime): TDateTime; //; const ANumberOfHours: Int64 = 1
14. Function IncMinute(const AValue: TDateTime; const ANumberOfMinutes: Int64): TDateTime;
15. Function IncMinute(const AValue: TDateTime): TDateTime; // ; const ANumberOfMinutes: Int64 = 1
16. Function IncSecond(const AValue: TDateTime; const ANumberOfSeconds: Int64): TDateTime;
17. Function IncSecond(const AValue: TDateTime): TDateTime; // ; const ANumberOfSeconds: Int64 = 1
18. Function IncMilliSecond(const AValue: TDateTime; const ANumberOfMilliSeconds: Int64): TDateTime;
19. Function IncMilliSecond(const AValue: TDateTime): TDateTime; // ; const ANumberOfMilliSeconds: Int64 = 1

[lucamar]

There are lots of Inc... functions to allow me to increment a DateTime variable. But is there a function that allows me to increment by a number of days or years or milliseconds as I see fit? I can write one, but hoping it's been done before. Can't find any though.

If what you mean is something that would let you do p.e.:
    IncDateTime(ADateTime, 365, idtInDays)
then AFAIK it isn't available (yet?) though it should be easy to implement with a simple case statement and the functions of DateUtils.pas cited  by wp above.