获取mac地址急

Question

#pragma comment( lib, "Iphlpapi" )
#pragma comment( lib, "Ws2_32" )#include <windows.h>
#include <Iphlpapi.h>
#include <iostream.h>
#include <stdio.h>
int main( ) {IPAddr ip = 0;
unsigned char mac[6];
DWORD  error = 0;    DWORD dwSize = sizeof( ULONG) ;
    ip = inet_addr("192.168.0.1");
    //ip = inet_addr("xxx.xxx.xxx.xxx");
    error = SendARP(ip,0,(PULONG)&mac,&dwSize);
    printf( "%.2x", mac[4] );
                
    return 0;
}
为什么每次都为cc

Answer 1

CString  CReportApp::getmac_one(int lana_num)
{
NCB ncb;
    UCHAR uRetCode;
CString s1;
    memset( &ncb, 0, sizeof(ncb) );
    ncb.ncb_command = NCBRESET;
    ncb.ncb_lana_num = lana_num; 
uRetCode = Netbios( &ncb );    
    memset( &ncb, 0, sizeof(ncb) );
    ncb.ncb_command = NCBASTAT;
    ncb.ncb_lana_num = lana_num;      strcpy( (char *)ncb.ncb_callname,  "*               " );
    ncb.ncb_buffer = (unsigned char *) &Adapter;
ncb.ncb_length = sizeof(Adapter); uRetCode = Netbios( &ncb );
    
    if ( uRetCode == 0 ) {
s1.Format( "%02X%02X%02X%02X%02X%02X", lana_num,
Adapter.adapt.adapter_address[0],
Adapter.adapt.adapter_address[1],
Adapter.adapt.adapter_address[2],
Adapter.adapt.adapter_address[3],
Adapter.adapt.adapter_address[4],
Adapter.adapt.adapter_address[5] );
    }
return s1;
}
CString CReportApp::getmac()
{
CString s1;

NCB ncb;
    UCHAR uRetCode;
LANA_ENUM lana_enum;    memset( &ncb, 0, sizeof(ncb) );
    ncb.ncb_command = NCBENUM;    ncb.ncb_buffer = (unsigned char *) &lana_enum;
    ncb.ncb_length = sizeof(lana_enum);
uRetCode = Netbios( &ncb );
if ( uRetCode == 0 )
{
return (getmac_one( lana_enum.lana[0]));
}
s1="";
return s1;
}

Answer 2

可以去这里看一看，有完整的演示代码，绝对实用：
http://www.aslike.net