unit Unit_FrmUSB;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Registry, StdCtrls;

type
  TFrmUSB = class(TForm)
    ButtonEN: TButton;
    ButtonDIS: TButton;
    EditKL: TEdit;
    procedure FormShow(Sender: TObject);
    procedure ButtonDISClick(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure ButtonENClick(Sender: TObject);
    procedure EditKLChange(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  FrmUSB: TFrmUSB;
  Reg:Tregistry;

implementation

{$R *.dfm}

procedure TFrmUSB.FormShow(Sender: TObject);
begin
  Reg:=TRegistry.Create;
  Reg.RootKey:=HKEY_LOCAL_MACHINE;
  Reg.OpenKey('SYSTEM\CurrentControlSet\Services\UsbStor',false);
end;

procedure TFrmUSB.ButtonDISClick(Sender: TObject);
begin
  Reg.WriteInteger('Start',3);
  Showmessage('USB 被啟用，請重啟計算機');
end;

procedure TFrmUSB.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  Reg.Free;
end;

procedure TFrmUSB.ButtonENClick(Sender: TObject);
begin
  Reg.WriteInteger('Start',4);
  Showmessage('USB 被禁用，請重啟計算機');
end;

procedure TFrmUSB.EditKLChange(Sender: TObject);
begin
  if EditKL.Text='3121280' then EditKL.Visible:=false;
end;

end.