Device *const dev = (Device*)((QAction*)action)->data().value<void*>();
for (weak_ptr<Device> dev_weak_ptr : devices_) {
shared_ptr<Device> dev_ptr(dev_weak_ptr);
Device *const dev = (Device*)((QAction*)action)->data().value<void*>();
for (weak_ptr<Device> dev_weak_ptr : devices_) {
shared_ptr<Device> dev_ptr(dev_weak_ptr);