exclnt1.pas

delphi RS232 计算机串口通讯源程序

(***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is TurboPower Async Professional
 *
 * The Initial Developer of the Original Code is
 * TurboPower Software
 *
 * Portions created by the Initial Developer are Copyright (C) 1991-2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * ***** END LICENSE BLOCK ***** *)

{*********************************************************}
{*                   EXCLNT1.PAS 4.06                    *}
{*********************************************************}

{**********************Description************************}
{*       This client portion works with ExServer         *}
{*           to implement a basic Winsock connection.    *}
{*********************************************************}
   {note: fill in wsAddress (property) in ApdWinsockPort1}
           {IP address}
unit ExClnt1;

interface

uses
  WinTypes, WinProcs, Messages, SysUtils, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, AdPort, AdWnPort, AdWUtil, OoMisc;

type
  TForm1 = class(TForm)
    ApdWinsockPort1: TApdWinsockPort;
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Label3: TLabel;
    procedure Button1Click(Sender: TObject);
    procedure ApdWinsockPort1WsConnect(Sender: TObject);
    procedure ApdWinsockPort1TriggerAvail(CP: TObject; Count: Word);
    procedure ApdWinsockPort1WsError(Sender: TObject; ErrCode: Integer);
    procedure ApdWinsockPort1WsDisconnect(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
  {Connect button click - attempts to connect}
begin
  ApdWinsockPort1.Open := not(ApdWinsockPort1.Open);
  if ApdWinsockPort1.Open then
    Label1.Caption := 'Attempting to connect';
end;

procedure TForm1.ApdWinsockPort1WsConnect(Sender: TObject);
  {Event OnWsConnect -change Button1 after connected}
begin
  Label1.Caption := 'Connected';
  Button1.Caption := 'Disconnect';
  ApdWinsockPort1.Output := 'Hello from Client';
end;

procedure TForm1.ApdWinsockPort1TriggerAvail(CP: TObject; Count: Word);
  {Event OnTriggerAvail}
var
  I : Word;
begin
  for I := 1 to Count do
    Label2.Caption := Label2.Caption + ApdWinsockPort1.GetChar;
end;

procedure TForm1.ApdWinsockPort1WsError(Sender: TObject; ErrCode: Integer);
  {Event WsError - display error in Label3}
begin
  Label1.Caption := 'Error...';
  Label3.Caption := 'Code: ' + IntToStr(ErrCode);
end;

procedure TForm1.ApdWinsockPort1WsDisconnect(Sender: TObject);
  {Event WsDisconnect - Change Button1 back}
begin
  Label1.Caption := '';
  Label2.Caption := '';
  Button1.Caption := 'Connect';
end;

end.