在delphi的nb30.pas單元中,包含了對netbios協(xié)議的完全支持，在該單元中定義了一個名為netbios的函數,通過該函數就能夠得到本機的MAC地址.

在編程時,引入nb30單元.如下源碼....

unit Unit1;

interface

uses
   Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
   Dialogs,   nb30, StdCtrls;    //加 nb30

type
   TForm1 = class(TForm)
     Edit1: TEdit;
     procedure FormCreate(Sender: TObject);
   private
     { Private declarations }
   public
     { Public declarations }
   end;

var
   Form1: TForm1;

implementation

{$R *.dfm}
function GetNetBIOSAddress : string;
var   ncb   : TNCB;
   status   : TAdapterStatus;
   lanenum : TLanaEnum;
     procedure ResetAdapter (num : char);
     begin
       fillchar(ncb,sizeof(ncb),0);
       ncb.ncb_command:=char(NCBRESET);
       ncb.ncb_lana_num:=num;
       Netbios(@ncb);
     end;
var
   i:integer;
   lanNum   : char;
   address : record
              part1 : Longint;
              part2 : Word;
             end absolute status;
begin
   Result:='';
   fillchar(ncb,sizeof(ncb),0);
     ncb.ncb_command:=char(NCBENUM);
     ncb.ncb_buffer:=@lanenum;
     ncb.ncb_length:=sizeof(lanenum);
   Netbios(@ncb);
   if lanenum.length=#0 then exit;
   lanNum:=lanenum.lana[0];
   ResetAdapter(lanNum);
   fillchar(ncb,sizeof(ncb),0);
     ncb.ncb_command:=char(NCBASTAT);
     ncb.ncb_lana_num:=lanNum;
     ncb.ncb_callname[0]:='*';
     ncb.ncb_buffer:=@status;
     ncb.ncb_length:=sizeof(status);
   Netbios(@ncb);
   ResetAdapter(lanNum);
   for i:=0 to 5 do
   begin
     result:=result+inttoHex(integer(Status.adapter_address[i]),2);
     if (i<5) then
     result:=result+'-';
   end;
end;
//
procedure TForm1.FormCreate(Sender: TObject);   //命令
begin
edit1.text:=GetNetBIOSAddress;
end;
end.

當然,也還有其它方法實現.如下例則是引入dll函數庫來實現

Function MacAddress: string;
var
   Lib: Cardinal;
   Func: function(GUID: PGUID): Longint; stdcall;
   GUID1, GUID2: TGUID;
begin
   Result := ';
   Lib := LoadLibrary('rpcrt4.dll');
   if Lib <> 0 then
   begin
     if Win32Platform <>VER_PLATFORM_WIN32_NT then
       @Func := GetProcAddress(Lib, 'UuidCreate')
       else @Func := GetProcAddress(Lib, 'UuidCreateSequential');
     if Assigned(Func) then
     begin
       if (Func(@GUID1) = 0) and
         (Func(@GUID2) = 0) and
         (GUID1.D4[2] = GUID2.D4[2]) and
         (GUID1.D4[3] = GUID2.D4[3]) and
         (GUID1.D4[4] = GUID2.D4[4]) and
         (GUID1.D4[5] = GUID2.D4[5]) and
         (GUID1.D4[6] = GUID2.D4[6]) and
         (GUID1.D4[7] = GUID2.D4[7]) then
       begin
         Result :=
          IntToHex(GUID1.D4[2], 2) + '-' +
          IntToHex(GUID1.D4[3], 2) + '-' +
          IntToHex(GUID1.D4[4], 2) + '-' +
          IntToHex(GUID1.D4[5], 2) + '-' +
          IntToHex(GUID1.D4[6], 2) + '-' +
          IntToHex(GUID1.D4[7], 2);
       end;
     end;
     FreeLibrary(Lib);
   end;
end;