unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, OleCtrls, SPComm, ExtCtrls;
  function CommOpen(fhandle:hwnd;sCommName:PAnsiChar;
                    IntTime:integer;IsMessage:integer):integer;stdcall;external 'JCYData.DLL';
  function CommClose(sCommName:PAnsiChar):integer;stdcall;external 'JCYData.DLL';

  function GetCommData(fhandle:hwnd;var defnum1,defnum2:double;var fisjz:integer):integer;stdcall;external 'JCYData.DLL';
type
  TForm1 = class(TForm)
    Panel1: TPanel;
    ComboBox1: TComboBox;
    Edit1: TEdit;
    Label1: TLabel;
    Label2: TLabel;
    Button1: TButton;
    Edit2: TEdit;
    Button3: TButton;
    Button2: TButton;
    Label3: TLabel;
    Button4: TButton;
    Comm1: TComm;
    Edit3: TEdit;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);

  private
    procedure On1201(Var Message:Tmessage);Message 1201;
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
procedure TForm1.On1201(Var Message:Tmessage);
var
  i1,i2:integer;
  unitname:string;
  fdata:double;
begin
  i1:=message.WParam;
  i2:=message.LParam;

  Edit1.Text:= floattostr(i1/100000 );
  IF i2=0 then edit3.Text:='M' else  edit3.Text:='Y';
end;

procedure TForm1.Button1Click(Sender: TObject);
begin

  if CommOpen(Form1.Handle,pchar(trim(ComboBox1.Text)),500,1)<1 then
  begin
    showmessage('´يخَ');
  end
  else
  begin
  end;
end;

procedure TForm1.Button2Click(Sender: TObject);
begin
  CommClose(pchar('com2'));
end;

procedure TForm1.Button3Click(Sender: TObject);
var
  num1,num2:double;
  i:integer;
  str1:string;
begin
 // SetLength(str1, 255);
  if GetCommData(Form1.Handle,num1,num2,i)>0 then
  begin
    Edit2.Text:= floattostr(num1 );
   // Edit2.Text:= floattostr(num2 );
  end;

end;

procedure TForm1.Button4Click(Sender: TObject);
begin
  if CommOpen(Form1.Handle,pchar(trim(ComboBox1.Text)),500,0)<1 then
  begin
    showmessage('´يخَ');
  end;
end;

end.