- connect(_core, SIGNAL(dbUpgradeInProgress(bool)), Client::instance(), SLOT(onDbUpgradeInProgress(bool)));
- connect(_core, SIGNAL(exitRequested(int,QString)), Client::instance(), SLOT(onExitRequested(int,QString)));
+ connect(_core.data(), &Core::dbUpgradeInProgress, Client::instance(), &Client::onDbUpgradeInProgress);
+ connect(_core.data(), &Core::exitRequested, Client::instance(), &Client::onExitRequested);