Получить или установить дату для директории

function
 GetFolderDate(Folder: string
): TDateTime;
 var

   Rec: TSearchRec;
   Found: Integer;
   Date: TDateTime;
 begin

   if
 Folder[Length(folder)] = '' then

     Delete(Folder, Length(folder), 1);
   Result := 0;
   Found  := FindFirst(Folder, faDirectory, Rec);
   try

     if
 Found = 0 then

     begin

       Date   := FileDateToDateTime(Rec.Time);
       Result := Date;
     end
;
   finally

     FindClose(Rec);
   end
;
 end
;

 procedure
 TForm1.Button1Click(Sender: TObject);
 var

   d: TDateTime;
 begin

   d := GetFolderDate('C:WINNT');
   ShowMessage(FormatDateTime('dddd, d. mmmm yyyy, hh:mm:ss', d));
 end
;


 { Sets the time for both files and directories }
 { for NT }

 function
 NT_SetDateTime(FileName: string
; dtCreation, dtLastAccessTime, dtLastWriteTime: TDateTime): Boolean;
 // by Nicholas Robinson 
var

   hDir: THandle;
   ftCreation: TFiletime;
   ftLastAccessTime: TFiletime;
   ftLastWriteTime: TFiletime;

   function
 DTtoFT(dt: TDateTime): TFiletime;
   var

     dwft: DWORD;
     ft: TFiletime;
   begin

     dwft := DateTimeToFileDate(dt);
     DosDateTimeToFileTime(LongRec(dwft).Hi, LongRec(dwft).Lo, ft);
     LocalFileTimeToFileTime(ft, Result);
   end
;

 begin

   hDir := CreateFile(PChar(FileName),
                      GENERIC_READ or
 GENERIC_WRITE,
                      0,
                      nil
,
                      OPEN_EXISTING,
                      FILE_FLAG_BACKUP_SEMANTICS,
                      0);
   if
 hDir <> INVALID_HANDLE_VALUE then

    begin

     try

       ftCreation       := DTtoFT(dtCreation);
       ftLastAccessTime := DTtoFT(dtLastAccessTime);
       ftLastWriteTime  := DTtoFT(dtLastWriteTime);
       Result := SetFileTime(hDir, @ftCreation, @ftLastAccessTime, @ftLastWriteTime);
     finally

       CloseHandle(hDir);
     end
;
   end

   else

     Result := False;
 end
;

 procedure
 TForm1.Button2Click(Sender: TObject);
 begin

   NT_SetDateTime('c:	empMyFolder', now, now, now);
 end
;

Другое по теме:

• Удаление каталога со всем содержимым
• Копирование файлов вместе с каталогами
• Определение размера каталога