Scrip Membuat Tombol ALT+F4 menjadi tak berfungsi

inilah hasil Membuat Tombol ALT+F4 menjadi tak berfungsi scrip yang digunakan

public
procedure AppMessage(var Msg: TMSG; var HAndled: Boolean);
end;

{...}

implementation

{...}

procedure TForm1.FormCreate(Sender: TObject);

begin

Application.OnMessage := AppMessage;

end;
procedure TForm1.AppMessage(var Msg: TMSG; var Handled: Boolean);

begin

Handled := False;

case Msg.Message of

WM_SYSKEYDOWN:

if Msg.wParam = VK_F4 then

Handled := True; // Matikan Fungsi ALT-F4

end;

end;

:))

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