SignalSlot Communication

Introduction to Qt QML qt connect signal slot Hi all, I have a TCanvas in a QT application which I update by a QT timer event When the user closes the TCanvas window, I get a segfault qt signal and slot Also in QML there is still the ability to connect a signal to a signal, as in QtC++ In QML, you can connect and disconnect signal slot

qt slot signal It's important to ensure that the object being sent is not destroyed before the connected slot is invoked Similarly, the reception of arguments