unit U_GetAddRess;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs,StdCtrls,WinSock, ComCtrls;
Function sendarp(ipaddr:ulong;temp:dword;ulmacaddr:pointer;ulmacaddrleng:pointer) : DWord; StdCall; External 'Iphlpapi.dll' Name 'SendARP';
type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    Edit1: TEdit;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  myip:ulong;
  mymac:array[0..5] of byte;
  mymaclength:ulong;
  r:integer;
begin
  {myip:=inet_addr(PChar(Trim(Edit1.Text)));
  mymaclength:=length(mymac);
  r:=sendarp(myip,0,@mymac,@mymaclength);
  label1.caption:='errorcode:'+inttostr(r);
  label2.caption:=format('%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x',[mymac[0],mymac[1],mymac[2],mymac[3],mymac[4],mymac[5]]); }
end;

end.