DateUtils.StartOfAWeek Function

Returns a TDateTime that represents 1the first moment on a specified day of a specified week.

Pascal

function StartOfAWeek(const AYear: Word; const AWeekOfYear: Word; const ADayOfWeek: Word = 1): TDateTime;

C++

TDateTime StartOfAWeek(const Word AYear, const Word AWeekOfYear, const Word ADayOfWeek = 1);

DateUtils

StartOfAWeek returns the first expressible moment (12:00:00.000 AM) of the specified day of the specified week.

The AYear parameter specifies the year of the desired day.

The AWeekOfYear parameter specifies the week of the year, where 1 is the first week in AYear that includes four or more days.

The ADayOfWeek parameter indicates the desired day in the specified week, where 1 is Monday, 2 is Tuesday, and so on.

If the parameters do not specify a valid date, StartOfAWeek raises an EConvertError exception.

Note: The definitions for AWeekOfYear and ADayOfWeek follow the ISO 8601 standard.