RAD Studio VCL Reference
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DateUtils.DecodeDateWeek Function

Returns the year, week of the year, and day of the week for a specified TDateTime value object.

Pascal
procedure DecodeDateWeek(const AValue: TDateTime; out AYear: Word; out AWeekOfYear: Word; out ADayOfWeek: Word);
C++
DecodeDateWeek(const TDateTime AValue, Word AYear, Word AWeekOfYear, Word ADayOfWeek);

DateUtils

DecodeDateWeek returns the day of the week and week of the year for a specified date/time value, along with the year in which that day and week occur. 

AValue is the date/time value about which you want information. 

AYear returns the year that AValue represents. 

AWeekOfYear returns the week within AYear that AValue represents, where 1 is the first week with four or more days. 

ADayOfWeek returns the day within AWeekOfYear that AValue represents, where 1 Monday and 7 is Sunday.

Note: The definitions for AWeekOfYear and ADayOfWeek follow the ISO 8601 standard.
Tip: To make the ADayOfWeek value more readable, use the Day of week constants.
 

 

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