Получить даты с понедельника по пятницу текущей недели

{
  Data sometimes have to be filtered regarding to working
  days (Mo.-Fri.) of the current Week. Following procs set
  your TDateTimePicker automatically. 
} 
 
 
function GetMonday(RefDay: TDate): TDate; 
var 
  DoW: Integer; 
  DateOffset: Integer; 
begin 
  DoW := DayOfWeek(RefDay); 
  // Montag der Woche 
  if DoW = 1 then DateOffset := -6  
  else  
    DateOffset := Dow - 2; 
  Result := RefDay - DateOffset; 
end; 
 
function GetFriday(RefDay: TDate): TDate; 
var 
  DoW: Integer; 
  DateOffset: Integer; 
begin 
  DoW := DayOfWeek(RefDay); 
     { 
     Friday of current week 
     Freitag der Woche 
     } 
  if DoW = 1 then DateOffset := -2  
  else  
    DateOffset := Dow - 6; 
  Result := RefDay - DateOffset; 
end; 
 
procedure SetWorkingDaysFilter(S, E: TDateTimePicker); 
var 
  N: TDate; 
begin 
  N      := Now; 
  S.Date := GetMonday(N); 
  E.Date := GetFriday(N); 
end; 
 
{Just as short as simple} 
{Einfach und kurz} 
 
 
type 
  TForm1 = class(TForm) 
    DStart: TDateTimePicker; 
    DEnd: TDateTimePicker; 
    btSetFilter: TButton; 
    procedure btSetFilterClick(Sender: TObject); 
  end; 
 
procedure TForm1.btSetFilterClick(Sender: TObject); 
begin 
  SetWorkingDaysFilter(DStart, DEnd); 
end;
 

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