unit1.pas

众所周知

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, IO, MyMemo, ExtCtrls;

type
  TForm1 = class(TForm)
    IO1: TIO;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Memo1: TMyMemo;
    Timer1: TTimer;
    Button5: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Timer1Timer(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
  if IO1.PortOpen then memo1.Lines.Add('IO Port Initial OK!')
end;

procedure TForm1.Button3Click(Sender: TObject);
begin
  close;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  timer1.Enabled:=false;
  try
    Io1.PortClose;
  finally
    memo1.Lines.Add('IO Port Uninstal OK!');
  end;
end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  timer1.Enabled:=not timer1.Enabled;
end;

procedure TForm1.Timer1Timer(Sender: TObject);
var ll:Cardinal;
begin
  ll:=io1.Readbyte(0);
//  memo1.memoadd(memo1.Handle,memo1.lines.Count,inttohex(ll,2)+' ');
  memo1.lines.Add(inttohex(ll,2));
//  memo1.lines.Add(inttostr(ll));
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  memo1.lines.Clear;
end;

end.