How to use signals and slots in Slicer 3d?

qt connect signal to slot with parameter   Dan 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

The first two arguments denote the object that picks up a signal and sends it to the receiver connect; signal parameters to the lambda

slot dice Hi, you need to add the parameters in the signal when you call connect, but you can omit them in the slot, so you don't need a dummy parameter  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