Windows Sockets 1.1应用实例(七十五)

              return (FALSE);

           }

           port_no = GetDlgItemInt(hDlg, IDS_PORTNO, NULL, 0);

           if (port_no == 0) {

              MessageBox(hDlg, "Port number must be between 0 and 65,535",

                        "Settings()",

                        MB_OK | MB_APPLMODAL | MB_ICONSTOP);

              return (FALSE);