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If called outside of a slot activated by a signal, -1 is returned Python PyQt-SpinBox · Python-gui · Python-PyQt · Python Practice Tags

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

free slot cleopatra PyQt4 supports the connectSlotsByName() function that is most commonly used by pyuic4 generated Python code to automatically connect signals Having learned QT in C++, now using it in python raised a few struggles Today we talk about how to implement custom signals in your objects