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function InstallInf(const PathName: string; hParent: HWND): Boolean;
var
instance: HINST;
begin
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procedure TForm1.Timer1Timer(Sender: TObject);
begin
Windows.Beep(1200+i_f,10+i_f);
if i_f<2000 then
begin
inc(i_f);
end
end;
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