signalslot: simple SignalSlot implementation for Python — signalslot

pyqt5 signals - Python Tutorial python signal slot Signals and slots are used for communication between objects A signal is emitted when a particular event occurs A slot can be any Python callable A slot is python signal slot You'll need to do two things before building the signalslot connection: Verify that activeLayer() is in fact returning a QgsMapLayer

python slot Create a custom signal that emits the index, then connect it from the instance that creates the widget, not the other way around