MilliSecondsBetween

Calculate the number of whole milliseconds between two DateTime values.

Declaration

Source position: dateutil.inc line 262

function MilliSecondsBetween(

const ANow: TDateTime;

const AThen: TDateTime

):Int64;

Arguments

`ANow`		First moment in time
`AThen`		Second moment in time

Function result

Number of milliseconds between ANow and AThen

Description

MillisSecondsBetween returns the number of whole milliseconds between ANow and AThen. This means a fractional part of a millisecond is dropped.

YearsBetween		Calculate the number of whole years between two DateTime values
MonthsBetween		Calculate the number of whole months between two DateTime values
WeeksBetween		Calculate the number of whole weeks between two DateTime values
DaysBetween		Number of whole days between two DateTime values.
HoursBetween		Calculate the number of whole hours between two DateTime values.
MinutesBetween		Calculate the number of whole minutes between two DateTime values.
SecondsBetween		Calculate the number of whole seconds between two DateTime 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.