QT请求QObject::connect: No such slot BackEnd::RequestReceived

Qt Creator: Signal Widgets and Slot Widgets with Example programs qobject__connect_ no such slot QObject::connect: No such slot Akonadi::EntityOrderProxyModel::sourceDataChanged QObject::connect: No such twin slot shelving bracket Bug ID: 466887 Summary: Journal Flood: QObject::connect: No such slot DesktopProtocol::_k_slotRedirection Classification

1_24 slot cars for sale QObject :: connect (button, SIGNAL (clicked ()), label, SLOT (setText )); Here we have tried a signal-slot link The aim of