procedure TForm1.Button1Click(Sender: TObject);
var
MySystemeTime:TSystemeTime;
begin
with MySystemeTime do
begin
wYear:=2002;
wMonth:=10;
wDay:=23;
wHoure:=12;
wMinute:=23;
wSecond:=21;
end;
SetSystemTime(MySystemeTime);
Application.MessageBox('系统时间已设定','提示',MB_OKCANCEL);
end;