学习官方示例 - SysUtils.DecodeDate、DecodeTime

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  Present: TDateTime;
  Year, Month, Day, Hour, Min, Sec, MSec: Word;
begin
  Present := Now;
  DecodeDate(Present, Year, Month, Day);
  DecodeTime(Present, Hour, Min, Sec, MSec);
  Text := Format('%d年%d月%d日 %d:%d:%d:%d', [Year, Month, Day, Hour, Min, Sec, MSec]);
end;

end.