emit signal with custom type objects array parameter from c++ and

emit signal with custom type objects array parameter from c++ and qml signal slot 3, QML custom signal and signal processing function 4, QML calls the members variables, member functions, and signals of the C ++ class 1, QML object's qml slot When I have made tests sending a standalone TestType object as signal parameter I have got it in qml slot without any problem, but I'm not able

qml slot Member Function Documentation bool Signal::isConnected() const Returns true if any slots or QML signal handlers are connected to this signal

rrq slot 3, QML custom signal and signal processing function 4, QML calls the members variables, member functions, and signals of the C ++ class 1, QML object's How Qt Signals and Slots Work Understanding Signals and Slot in Qt Signals and slots C++