A very simple implementation of QTs signal slot pattern in Python

website python signal slot PyQt4 supports the connectSlotsByName() function that is most commonly used by pyuic4 generated Python code to automatically connect signals python signal slot The selectionChanged signal passes the QgsMapLayer that had a selection change So, your slot should look like selectedChanged If

python signal slot A slot is a Python callable If a signal is connected to a slot then the slot is called when the signal is emitted If a signal isn't connected then nothing  SignalSlot — wiki A simple implementation of the SignalSlot pattern I originally uploaded this to ASPN's python cookbook in 2005 To use, simply create a  Coding, PyQt5, Python PyQt5 Signal Slot 機制入門 Published by 居米 Qt Designer 右下角有個SignalSlot Editor，先按+ 產生一組訊號連結

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