DISPATCHER_SIGHANDLER_ARGS(s, data);
netconf_sighandler(ek_signal_t s, ek_data_t data){  if(s == ctk_signal_button_activate) {       if(data == (ek_data_t)&tcpipclosebutton) {      apply_tcpipconfig();      ctk_window_close(&tcpipwindow);      netconf_quit();      ctk_redraw();    }  } else if(s == ctk_signal_window_close) {    netconf_quit();  }}