本文讲述了Delphi读取系统时间与日期的实现方法，首先设置各个控件用于显示时间、读取时间与设置时间。再添加如下代码：

unit Unit1;interfaceuses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls;type TForm1 = class(TForm)  Button1: TButton;  Memo1: TMemo;  Button2: TButton;  procedure Button1Click(Sender: TObject);  procedure FormCreate(Sender: TObject);  procedure Button2Click(Sender: TObject); private  { Private declarations } public  { Public declarations } end;var Form1: TForm1;implementation{$R *.DFM}uses ShellAPI;function SetSystemDateTime(Year, Month, Day, Hour, Minute, Second: word): integer;  export; procedure SetDate(Year, Month, Day: Word); assembler; asm  MOV CX,Year  MOV DH,BYTE PTR Month  MOV DL,BYTE PTR Day  MOV AH,2BH  INT 21H end; procedure SetTime(Hour, Minute, Second, Sec100: Word); assembler; asm  MOV CH,BYTE PTR Hour  MOV CL,BYTE PTR Minute  MOV DH,BYTE PTR Second  MOV DL,BYTE PTR Sec100  MOV AH,2DH  INT 21H end;begin SetDate(Year, Month, Day); SetTime(Hour, Minute + 1, Second, 0); result := 1;end;procedure TForm1.Button1Click(Sender: TObject);var    st : TSYSTEMTIME;begin    //得到系统时间    GetSystemTime(st); //显示系统时间    Memo1.Lines.Add('系统时间 = ' +         IntToStr(st.wmonth) + '/' +         IntToStr(st.wDay) + '/' +         IntToStr(st.wYear) + ' ' +         IntToStr(st.wHour) + ':' +         IntToStr(st.wMinute) + ':' +         IntToStr(st.wSecond));end;procedure TForm1.FormCreate(Sender: TObject);begin    Memo1.Lines.Clear;end;procedure TForm1.Button2Click(Sender: TObject);var st: TSYSTEMTIME;begin DateTimeToSystemTime(StrToDatetime('2002-06-23 15:39:46' ),st); SetSystemTime(st);end;end.