Connect Root signal to QT slot - ROOT - ROOT Forum

pureVirtualCall false positive with Qt signals and slots qt connect signal slot You can connect as many signals as you want to a single slot, and a signal can be connected to as many slots as you need It is even possible to connect a qt slot signal 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

qtech slot malaysia 3 Answers 3 Don't do it like this, hide your button in the class A, emit your own defined signal from class A lets call it OnButtonClicked