Get User IP address

Posted by Raz on June 16, 2007 Leave a comment (0) Go to comments

So, you need a way to get your user local IP address? Here is the winsock way.
Drop a Button and two Labels then add the bellow code on your window events:

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#include <System.hpp>

#include <Winsock2.h>

//-----------------------------------------------------------------

void __fastcall TForm1::FormCreate(TObject *Sender)

{

   WORD wVersionRequested;

   WSAData wsaData;

   wVersionRequested = MAKEWORD(1,1);

   WSAStartup(wVersionRequested,&wsaData);

}

//-----------------------------------------------------------------

void __fastcall TForm1::Button1Click(TObject *Sender)

{

    char Buf[256]={0};

    hostent *p=gethostbyname(Buf);

    //user ip

    Label1->Caption=(inet_ntoa)(*((in_addr*)p->h_addr_list[0]));

    //user computer name

    Label2->Caption=p->h_name;

}

//-----------------------------------------------------------------

void __fastcall TForm1::FormDestroy(TObject *Sender)

{

    WSACleanup;

}

//-----------------------------------------------------------------