How to connect signal and slot in different classes in Qt?

Qt Signals And Slots - Programming Examples qt connect signal slot 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 qt slot signal Learn how to call QML function from C++ using connect function

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