signal slot qml
std::signal
When signal handler is set to a function and a signal occurs, it is implementation defined whether std::signal(sig, SIG_DFL) will be executed immediately before the start of signal handler.
Creating Dialogs With Qt Designer - PyQt5 - Python GUIs
Custom Signal and Slots - A slot is a standard method that can be connected to a signal.
Cross-Platform Development with Qt 6 and Modern C++[Book]
Method Three: Tried to set it up so that the QML emits a signal to the C++ object instead of invoking a C++ object slot directly.
Support for Signals and Slots — PyQt 5.7 Reference Guide
Also in QML there is still the ability to connect a signal to a signal, as in Qt/C++.