How to Expose a Qt C++ Class with Signals and Slots to QML

How to Expose a Qt C++ Class with Signals and Slots to QML qt connect signal to slot with parameter As koan suggests the best approach is to use another slot with a QString argument and then call the slot you actually want Share qt connect signal to 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 connect signal to slot From Qt onwards, Qt offers two different ways to write signal-slot connections in C++: The string-based connection syntax and the functor-based

qt connect signal to slot with parameter By the way, it doesn't matter whether we specify the argument in a connect call as const Copy& or Copy Qt normalises the type to Copy any way  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