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Q: 

What is the grab-command (leftMouseButton) for QGraphicsView.ScrollHandDrag

Hi,

you can enable mouse dragging by setting setDragMode(QtGui.QGraphicsView.ScrollHandDrag for QGraphicsView. Then you can drag the QGraphicsScene by holding the leftMouseButton. But I want to drag with the middleMouseButton not leftMouseButton. How can I do that? I tried setCursor(QtCore.Qt.ClosedHandCursor) but it isn't working. Has someone an idea?

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