如何获取本机的网关IP地址?

Question

如题。

Answer 1

http://search.csdn.net/Expert/topic/2315/2315588.xml?temp=.8135645

Answer 2

bool CNetView::GetAdapterInfo(CString &strGwIp)
{
PIP_ADAPTER_INFO pAdapterInfo;
PIP_ADAPTER_INFO pAdapter = NULL;
DWORD dwRetVal = 0;

pAdapterInfo = (IP_ADAPTER_INFO *) malloc( sizeof(IP_ADAPTER_INFO) );
unsigned long ulOutBufLen = sizeof(IP_ADAPTER_INFO);

// Make an initial call to GetAdaptersInfo to get
// the necessary size into the ulOutBufLen variable
if (GetAdaptersInfo( pAdapterInfo, &ulOutBufLen) == ERROR_BUFFER_OVERFLOW) 
{
free(pAdapterInfo);
pAdapterInfo = (IP_ADAPTER_INFO *) malloc (ulOutBufLen); 
}

if ((dwRetVal = GetAdaptersInfo( pAdapterInfo, &ulOutBufLen)) == NO_ERROR) 
{
pAdapter = pAdapterInfo;
while (pAdapter) 
{
TRACE("\tAdapter Name: \t%s\n", pAdapter->AdapterName);
TRACE("\tAdapter Desc: \t%s\n", pAdapter->Description);
TRACE("\tAdapter Addr: \t%ld\n", pAdapter->Address);
TRACE("\tIP Address: \t%s\n", pAdapter->IpAddressList.IpAddress.String);
TRACE("\tIP Mask: \t%s\n", pAdapter->IpAddressList.IpMask.String);
TRACE("\tGateway: \t%s\n", pAdapter->GatewayList.IpAddress.String);
strGwIp.Format("网关[%s]", pAdapter->GatewayList.IpAddress.String);
//AfxMessageBox(strGwIp); TRACE("\t***\n");
if (pAdapter->DhcpEnabled) 
{
TRACE("\tDHCP Enabled: Yes\n");
TRACE("\t\tDHCP Server: \t%s\n", pAdapter->DhcpServer.IpAddress.String);
TRACE("\tLease Obtained: %ld\n", pAdapter->LeaseObtained);
}
else
TRACE("\tDHCP Enabled: No\n");

if (pAdapter->HaveWins) 
{
TRACE("\tHave Wins: Yes\n");
TRACE("\t\tPrimary Wins Server: \t%s\n", pAdapter->PrimaryWinsServer.IpAddress.String);
TRACE("\t\tSecondary Wins Server: \t%s\n", pAdapter->SecondaryWinsServer.IpAddress.String);
}
else
TRACE("\tHave Wins: No\n");
pAdapter = pAdapter->Next;
}
}
else 
{
TRACE("Call to GetAdaptersInfo failed.\n");
return false;
}
free(pAdapterInfo);

return true;
}