how to connect to signal from one class to a slot in another?

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

The selectionChanged signal passes the QgsMapLayer that had a selection change So, your slot should look like selectedChanged If Up Next 19 PyQt5 QCheckBox Python GUI Programming With PyQt5 7:11; Now Playing Up Next PyQt5 QDial Example With valueChanged Signal #20 6:41

coyote moon slot machine review If called outside of a slot activated by a signal, -1 is returned Python PyQt-SpinBox · Python-gui · Python-PyQt Practice Tags : python  The slot can be any Python call The connection to the slot is called while the signal is transmitting Signals & slots Here's a simple example to demonstrate