[Dev-C++] How to use WSAGetLastError?

[Vlada D. <dj...@im...>]

Hi.
I'm trying to create a WinSock app. I created a socket, but bind() returns
an error, so I tried WSAGetLastError to get error code. Here's the code:

case ID_SOCK_OPEN:
              {
                 OpenSocket(PORT);//in this function I create socket
                 int error=WSAGetLastError();
                 char buffer[100];
                 itoa(error,buffer,2);
                 MessageBox(NULL,buffer,"Error Code",MB_OK);
              }
              break;
In message box I get 0, so I suppose something is wrong about this. Can
anybode tell me better way to get error code?
Another question: Here's the code for OpenSocket function. Can somebody
figure out why call to bind() fails?

BOOL OpenSocket(int port)
{
    if(sock=socket(AF_INET,SOCK_STREAM,0)==-1)
    {
        MessageBox(NULL,"Could not create
socket","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }
    server.sin_family=AF_INET;
    server.sin_port=htons(port);
    server.sin_addr.s_addr=INADDR_ANY;

    if(bind(sock,(struct sockaddr*)&server,sizeof(struct sockaddr))==-1)
    {
        MessageBox(NULL,"Bind error","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }

    if(listen(sock,3)==-1)
    {
        MessageBox(NULL,"Listen error","Error",MB_OK|MB_ICONSTOP);
        return FALSE;
    }
    else
    {
        MessageBox(NULL,"Socket opened","Success",MB_OK);
        return TRUE;
    }
}

Thanks in advance.
------------
Vlada