Thread: Obtain local machine IP address

Hi,

I need to obtain the local ip address of a PC
e.g.

192.168.0.100

I have tried using gethostbyname() function, but can only get the name, not the ip address.


struct hostent *name;
name = gethostbyname("localhost");
m_ip.SetWindowText(name->h_name);


Please help!

Compile VC++ Platform win xp pro

the HOSTENT stucture dose contrain the IP address(es)

Code:

struct hostent {
    char FAR *       h_name;
    char FAR * FAR * h_aliases;
    short            h_addrtype;
    short            h_length;
    char FAR * FAR * h_addr_list;
};

it's not in text format so you will need to use inet_ntoa to convert the address(es) to dotted format.

Can you give me a code sample of how to do this?

To ge the first address.

Code:

struct in_addr Address;
struct hostent *name; 
name = gethostbyname("localhost");
memcpy(&Address, *name->h_addr_list, 4);
// and put it somewhere
m_ip.SetWindowText(inet_ntoa(Address));

Also I need to get the local pc's gateway address