PyQt5: Automatic Connection, pyqtSlot(), & User-Defined Slot Function

Qt MOOC Part 2 qt connect signal to slot with parameter To send signal across threads we have to use the parameter Without this parameter the code will be executed in the same qtech slot We have signalslot mechanism in Qt and observer updateParameterNodeFromGUI not called when ui is updated because connect() don't work

qt connect signal to slot with parameter You need to use lambda or to pass a argument to a slot Try this from functools import partial buttonbox = dialog