Python PyQt custom signal example

The signal can be connected to a slot , which needs to be Python callable (in other words, a method or a class, anything implementing the __call

Python PyQt custom signal example QT's widgets have predefined slots so that it is possible to directly connect a signal of one widget to a slot of another widget Lesson 1 Python 3, ArcGIS

The signal can be connected to a slot , which needs to be Python callable (in other words, a method or a class, anything implementing the __call

slot mechanism These are: signals, slots and properties In this first example, we will restrict ourselves to a pair of a basic signal and slot The rest will be covered

to emit Qt signals from Python is not yet implemented but PythonQt allows to just emit a signal by calling it like a normal slot

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

The selectionChanged signal passes the QgsMapLayer that had a selection change So, your slot should look like selectedChanged If