Unit 'DateUtils'	Package
[Overview][Constants][Classes][Procedures and functions][Index]	[#rtl]

StartOfAWeek

Return a day of the week, given a year, week and day in the week.

Declaration

Source position: dateutil.inc line 177

function StartOfAWeek(

const AYear: Word;

const AWeekOfYear: Word;

const ADayOfWeek: Word

):TDateTime; function StartOfAWeek(

const AYear: Word;

const AWeekOfYear: Word

):TDateTime;

Arguments

`AYear`		Year.
`AWeekOfYear`		Week in the year.
`ADayOfWeek`		Day in the week (default 1).

Function result

First day of the given week, in TDateTime format.

Arguments

`AYear`		Year.
`AWeekOfYear`		Week in the year.

Description

StartOfAWeek returns a TDateTime value with the date of the indicated day of the week indicated by the AYear, AWeek, ADayOfWeek values.

The default value for ADayOfWeek is 1.

StartOfTheWeek		Return the first day of the week, given a date.
EndOfTheWeek		Calculate a TDateTime value which represents the end of a week, given a date in that week.
EndOfAWeek		Return the last moment of day of the week, given a year and a week in the year.
StartOfAMonth		Return first date of month, given a year/month pair.
EndOfTheYear		Calculate a TDateTime value representing the last day of a year, given a date in that year.
EndOfAYear		Calculate a TDateTime value representing the last day of a year.
EndOfTheMonth		Calculate a TDateTime value representing the last day of the month, given a day in that month.
EndOfAMonth		Calculate a TDateTime value representing the last day of the indicated month.

Example

Program Example34;

{ This program demonstrates the StartOfAWeek function }

Uses SysUtils,DateUtils;

Const
  Fmt = '"First day of this week : "dd mmmm yyyy hh:nn:ss';
  Fmt2 = '"Second day of this week : "dd mmmm yyyy hh:nn:ss';

Var
  Y,W : Word;

Begin
  Y:=YearOf(Today);
  W:=WeekOf(Today);
  Writeln(FormatDateTime(Fmt,StartOfAWeek(Y,W)));
  Writeln(FormatDateTime(Fmt2,StartOfAWeek(Y,W,2)));
End.

StartOfAWeek

Declaration

Arguments

Function result

Arguments

Description

See also

Example