unit SimplePort1u1;

interface
// use "smport.vxd" driver with Win95/98,
// copy file to "Windows\System" directory or to directory of your application

// use "smport.sys" driver with WIN NT/2000,
// copy file to "WinNT\SYSTEM32" directory or to directory of your application

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    SmallPort1: TSmallPort;
    Button4: TButton;
    Label1: TLabel;
    procedure Button4Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
  private
    { Private-Deklarationen }
  public
    { Public-Deklarationen }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button4Click(Sender: TObject);
begin
 SmallPort1.Opened:=false;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
// if SmallPort1.Opened then
// begin SmallPort1.Opened:=false; Button1.Caption:='Open Driver' end
// else SmallPort1.Opened:=true;
// if SmallPort1.Opened then Button1.Caption:='Close Driver';
   SmallPort1.Opened:=true;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
    SmallPort1.Port[$378]:=0;
//SmallPort1.WriteByte[Parallel1];
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
    SmallPort1.Port[$378]:=$ff;
end;

end.