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//the system time of you PC has changed. unit Unit1; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls; type TForm1 = class(TForm) Button1: TButton; procedure Button1Click(Sender: TObject); private procedure WMTIMECHANGE(var message: TWMTIMECHANGE); message WM_TIMECHANGE; { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin close; end; procedure TForm1.WMTIMECHANGE(var message: TWMTIMECHANGE); begin ShowMessage('Time changed'); end; end.
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