unit Unit1;    interface    uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;    type
  TForm1 = class(TForm)
    Button1: TButton;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;    var
  Form1: TForm1;
  Code39Map:array['0'..'3'] of string=
  ('00S110','10S001','01S001','11S00');
  Code39MapStar:string='0S0110';
implementation    {$R *.DFM}
procedure PrintCode39(s:string);
var i,j,k,p,u,u2:integer;
    s2:string;
begin
   p:=100;
   u:=3;
   for i:=1 to length(s) do
   begin
     if s[i]='*' then s2:=Code39MapStar
     else s2:=Code39Map[s[i]];
     for j:=1 to length(s2) do
     begin
        u2:=0;
        if s2[j]='1' then u2:=u*2;
        if s2[j]='0' then u2:=u;
        for k:=1 to u2 do
        begin
           form1.Canvas.moveto(p,0);
           form1.Canvas.LineTo(p,100);
           p:=p 1;
        end;
        p:=p u;
     end;
   end;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
   PrintCode39(edit1.text);
end;    end.