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代码文件:

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unit Unit1;interfaceuses  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,  Dialogs, StdCtrls;type  TForm1 = class(TForm)    ListBox1: TListBox;    Button1: TButton;    Button2: TButton;    procedure Button1Click(Sender: TObject);    procedure Button2Click(Sender: TObject);  end;var  Form1: TForm1;implementation{$R *.dfm}procedure TForm1.Button1Click(Sender: TObject);var  D: TDate;  T: TTime;begin  D := EncodeDate(2008, 9, 11);  T := EncodeTime(14, 56, 12, 1);  ListBox1.Clear;  ListBox1.Items.Add(FormatDateTime('yyyy/mm/dd', D));  ListBox1.Items.Add(FormatDateTime('hh:nn:ss:zzz', T));end;procedure TForm1.Button2Click(Sender: TObject);var  D: TDate;  T: TTime;  DT: TDateTime;begin  D := StrToDate('2008-9-11');  T := StrToTime('14:56:06');  DT := StrToDateTime('2008-9-11 14:56:06');  ListBox1.Clear;  ListBox1.Items.Add(DateToStr(D));  ListBox1.Items.Add(TimeToStr(T));  ListBox1.Items.Add(DateTimeToStr(DT));end;end.

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窗体文件:

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object Form1: TForm1  Left = 0  Top = 0  Caption = 'Form1'  ClientHeight = 93  ClientWidth = 249  Color = clBtnFace  Font.Charset = DEFAULT_CHARSET  Font.Color = clWindowText  Font.Height = -11  Font.Name = 'Tahoma'  Font.Style = []  OldCreateOrder = False  PixelsPerInch = 96  TextHeight = 13  object Button1: TButton    Left = 158    Top = 14    Width = 75    Height = 25    Caption = 'Button1'    TabOrder = 0    OnClick = Button1Click  end  object ListBox1: TListBox    Left = 0    Top = 0    Width = 145    Height = 93    Align = alLeft    ItemHeight = 13    TabOrder = 1    ExplicitHeight = 206  end  object Button2: TButton    Left = 158    Top = 53    Width = 75    Height = 25    Caption = 'Button2'    TabOrder = 2    OnClick = Button2Click  endend