VC obtains the IP address and Host Name of the machine.

Using WinSock to obtain the Host Name and IP address is actually very simple. The main functions used are gethostname and gethostbyname.

First, use gethostname (char * Name, int namelen) to obtain the host name. Name is the Buf that saves the host name, And namelen is the length of the specified Buf. Then, use gethostbyname (char * ADDR) to obtain the Host IP address. The return value of this function is the hostent pointer. The hostent struct is as follows:

Struct hostent {
Char far *{
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} "> H_name;
Char far *{
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} "> H_aliases;
Short {
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} "> H_addrtype;
Short {
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} "> H_length;
Char far *{
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} "> H_addr_list;
};

Obtain the Host IP Address by traversing h_addr_list.

 

Char * pchhostname = new char [256]; <br/> gethostname (pchhostname, 256); <br/> hostent * phost = gethostbyname (pchhostname ); <br/> int I; <br/> cstring strip; <br/> for (I = 0; phost! = NULL & phost-> h_addr_list [I]! = NULL; I ++) <br/>{< br/> lpctstr psz = inet_ntoa (* (struct in_addr *) phost-> h_addr_list [I]); <br/> strip + = psz; <br/> strip + = ". "; <br/>}< br/> This-> getdlgitem (idc_zhuji)-> setwindowtext (pchhostname); <br/> This-> getdlgitem (idc_ip) -> setwindowtext (strip );