unit1.~pas

定时扫描局域网络中的电脑的Mac地址情况

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, winsock;

type

  ipaddr = longint;
  pulong = ^u_long;
  TForm1 = class(TForm)
    Edit1: TEdit;
    Label1: TLabel;
    Button1: TButton;
    Edit2: TEdit;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);


  private
    { Private declarations }
  public
    { Public declarations }
  end;
  function SendARP(DestIP: ipaddr; SrcIP: ipaddr; pMacAddr: pulong; PhyAddrLen:pulong): DWORD; stdcall; external 'IPHLPAPI.DLL'
  procedure doGetMacByIp(const ipaddress: WideString;var macaddress, status: OleVariant);
  function  GetMacByIp(const ipaddress: String):string;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  status, macaddr: olevariant;
begin
  dogetmacbyip(edit1.Text, macaddr, status);
  edit2.Text:= macaddr ;
end;



end.