Dicas Delphi - Detectando o MAC do PC

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Detectando o MAC do PC

Função que retorna o MAC do computador.

function GetMacId(): String;
var
Lib: Cardinal;
Func: function(GUID: PGUID): Longint; stdcall;
GUID1, GUID2: TGUID;
begin
Lib:=LoadLibrary('rpcrt4.dll');
  if Lib <> 0 then begin
    @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
  end;
end;

Exemplos de Uso:

ShowMessage(GetMacId());
Edit1.Text:=GetMacId();