What do I do if a slot is not invoked?

qt connect signal to slot with parameter   Dan qt connect signal to slot with parameter

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

QObject::connect; Why the new connecting a signal with many arguments to a slot with less arguments  To connect a Signal to a Slot you can simply call QObject::connect or QObject::

slot มีตังค์ QObject::connect() can use standard string values for Signal and Slot parameters · QObject::connect() can use standard string values for Signal and a lambda for Qt's signals and slots mechanism ensures that if you connect a signal to a slot, the slot will be called with the signal's parameters at the right time Signals