this, &StatusBarModel::onWifiStrengthChanged);
setWifiStatus(d->wifi_a->wifiConnected(), d->wifi_a->wifiEnabled(), d->wifi_a->wifiStrength());
this, &StatusBarModel::onWifiStrengthChanged);
setWifiStatus(d->wifi_a->wifiConnected(), d->wifi_a->wifiEnabled(), d->wifi_a->wifiStrength());