SecondsBetween

Calculate the number of whole seconds between two TDateTime values.

Declaration

Source position: dateutil.inc line 262

  function SecondsBetween(const ANow: TDateTime; const AThen: TDateTime)
                          : Int64;

Description

SecondsBetween returns the number of whole seconds between ANow and AThen. This means the fractional part of a second (milliseconds etc.) is dropped.

See also

Name Description
DaysBetween Number of whole days between two TDateTime values.
HoursBetween Calculate the number of whole hours between two TDateTime values.
MilliSecondsBetween Calculate the number of whole milliseconds between two TDateTime values.
MinutesBetween Calculate the number of whole minutes between two TDateTime values.
MonthsBetween Calculate the number of whole months between two TDateTime values
WeeksBetween Calculate the number of whole weeks between two TDateTime values
YearsBetween Calculate the number of whole years between two TDateTime values

Example

Program Example61;
{ This program demonstrates the SecondsBetween function }
Uses SysUtils,DateUtils;
Procedure Test(ANow,AThen : TDateTime);
begin
 Write('Number of seconds between ');
 Write(TimeToStr(AThen),' and ',TimeToStr(ANow));
 Writeln(' : ',SecondsBetween(ANow,AThen));
end;
Var
  D1,D2 : TDateTime;
Begin
  D1:=Now;
  D2:=D1-(999*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(1001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(2001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(5001*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(5.4*OneSecond);
  Test(D1,D2);
  D2:=D1-(2.5*OneSecond);
  Test(D1,D2);
End.