MilliSecondsBetween¶

Calculate the number of whole milliseconds between two TDateTime values.

Declaration¶

Source position: dateutil.inc line 286

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

Arguments¶

Name	Description
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.

See also¶

Name	Description
YearsBetween	Calculate the number of whole years 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.
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.
SecondsBetween	Calculate the number of whole seconds 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.