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2楼
发表于 2008-7-16 17:11
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unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
var
a:integer;
begin
a:=0;
repeat
windows.Beep(999,1000);
windows.Beep(760,1000);
until a<>0;
end;
end.  |
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