C++获取本机MAC，IP，MASK地址的方法

#include "InitSock.h" 
#include <stdio.h> 
 
#include <iphlpapi.h> 
#pragma comment(lib, "IPHLPAPI.lib") 
 
u_char g_ucLocalMac[6]; 
DWORD g_dwGatewayIP; 
DWORD g_dwLocalIP; 
DWORD g_dwMask; 
 
BOOL GetGlobalData() 
{ 
    PIP_ADAPTER_INFO pAdapterInfo = NULL; 
    ULONG ulSize = 0; 
    //为结构申请内存 
    ::GetAdaptersInfo(pAdapterInfo, &ulSize); 
    pAdapterInfo = (PIP_ADAPTER_INFO)::GlobalAlloc(GPTR, ulSize); 
    if ( ERROR_SUCCESS  == ::GetAdaptersInfo(pAdapterInfo, &ulSize)) 
    { 
        if (pAdapterInfo != NULL) 
        { 
            memcpy(g_ucLocalMac, pAdapterInfo->Address, 6); 
            g_dwGatewayIP = ::inet_addr(pAdapterInfo->GatewayList.IpAddress.String); 
            g_dwLocalIP = ::inet_addr(pAdapterInfo->IpAddressList.IpAddress.String); 
            g_dwMask = ::inet_addr(pAdapterInfo->IpAddressList.IpMask.String); 
        } 
    } 
    //in_addr表示IP的结构 
    in_addr in; 
    in.S_un.S_addr = g_dwLocalIP; 
    printf("  IP Address:%-30s\n", ::inet_ntoa(in)); 
 
    in.S_un.S_addr = g_dwGatewayIP; 
    printf("  Gateway Address:%-30s\n", ::inet_ntoa(in)); 
 
    in.S_un.S_addr = g_dwMask; 
    printf("  MASK Address:%-30s\n", ::inet_ntoa(in)); 
 
    u_char* p = g_ucLocalMac; 
    printf("  MAC:%02X-%02X-%02X-%02X-%02X-%02X\n", p[0], p[1], p[2], p[3], p[4], p[5]); 
    ::GlobalFree(pAdapterInfo); 
    pAdapterInfo = NULL; 
    return TRUE; 
} 
 
void main() 
{ 
    CInitSock initSock; 
     
    GetGlobalData(); 
 
    printf("*******************************"); 
    getchar(); 
}