MilliSecondsBetween

Calculate the number of whole milliseconds between two TDateTime values.

Declaration

Source position: dateutil.inc line 263

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

Description

MillisSecondsBetween returns the number of whole milliseconds between ANow and AThen. This means a fractional part of a millisecond 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.
MinutesBetween Calculate the number of whole minutes between two TDateTime values.
MonthsBetween Calculate the number of whole months between two TDateTime values
SecondsBetween Calculate the number of whole seconds 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 Example62;
{ This program demonstrates the MilliSecondsBetween function }
Uses SysUtils,DateUtils;
Procedure Test(ANow,AThen : TDateTime);
begin
 Write('Number of milliseconds between ');
 Write(TimeToStr(AThen),' and ',TimeToStr(ANow));
 Writeln(' : ',MilliSecondsBetween(ANow,AThen));
end;
Var
  D1,D2 : TDateTime;
Begin
  D1:=Now;
  D2:=D1-(0.9*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(1.0*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(1.1*OneMilliSecond);
  Test(D1,D2);
  D2:=D1-(2.5*OneMilliSecond);
  Test(D1,D2);
End.