Object::connect: No such slot xxx 解决方法

QObject::connect: No such slot xxx错误提示 qobject__connect_ no such slot QObject::connect: No such slot MainWindow::setRPSystemAudioHDMI() QObject::connect: No such slot MainWindow::changeRPSystemVol Server great wild elk slot Hello! I am using a connect function but it will not recognize my variable as a slot even though it is such Here is a part of the code

a auto slot wallet emit aSignal(); Page 37 Making the connection QObject::connect( src, SIGNAL, dest, SLOT ); function name> ( arg type>