QObject::connect: No such slot QWidget::mySlot

QObject::connect: No such slot as RxMock::rxsignal() If I remove Q_OBJECT in class MockRx, I get: No such slot as QWidget::rxsignal() I also tried to

QObject::connect: No such slot FenCalculatrice::FenCalculatrice::calculerOperation() in Designer_training: 10 QObject

isis slot QObject::connect: No such slot MainWindow::setRPSystemAudioHDMI() QObject::connect: No such slot MainWindow::changeRPSystemVol Server

slot 188 QObject::connect: No such slot MainWindow::addItemToList in-- 이런 에러가 난다면, 아마도 시그널의 인자와 슬롯의 인자가 맞지 않아