Copied or Not Copied: Arguments in Signal-Slot Connections?

New-style Signal and Slot Support — PyQt 1 Reference Guide qt connect signal to slot with parameter Like for waitSignal , each callable has to return True if parameters match, False otherwise Instead of a specific callable, None can be provided, to disable qt connect signal to slot with parameter Basically you can create signals which allow for arbitrary slot signatures The emit method will accept the same argument types you declared as

qtech slot We have signalslot mechanism in Qt and observer updateParameterNodeFromGUI not called when ui is updated because connect() don't work