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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;
interface
uses
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.
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