Difference between SignalSlot and DataBusPattern

Or is it that just another name because QT has it in every QObject ? (Sorry, I stopped reading your Link at The Meta Object Compiler where too

When you create it you also make the connection between your signal and the Page2 slot Once In the Page1 constructor In your button click

signal and slot in qt Signals And Slots

signal and slot arguments are not compatible Signals and Slots · loose coupling: The key advantage of the signals and slots is that the caller does not have to know anything about the receiver and vice