QGraphicsScene's changed signal is documented as: void changed (const QList<QRectF>&)
The "Qt Utility classes and their Python equivalents" section of "Chapter 10 Qt Class Hierarchy" of GUI Programming with Python: QT Edition (from http://www.commandprompt.com/community/pyqt/x3738) says: "You can always use a Python list wherever a QList is needed". But defining a signal as: sceneChanged = QtCore.pyqtSignal(list) and then doing: self._scene.changed.connect(self.sceneChanged) results in the following exception: "TypeError: connect() failed between changed(QList<QRectF>) and sceneChanged()" As a workaround, I was able to do the following: @QtCore.pyqtSlot(list) def changed (self, rects): self.sceneChanged.emit(rects) With the following connect() statement: self._scene.changed.connect(self.changed) But how can I directly connect my signal to QGraphicScene's changed signal without going through an intermediate python method? _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt