Traceback (most recent call last):File "lib\pwiki\WikiTxtCtrl.py", line 3293, in OnMouseWheelevt.m_wheelRotation = -evt.m_wheelRotation
The public data members of wx.MouseEvent (m_shiftDown, etc.) have been removed, but since wx.MouseEvent now derives from wx.MouseState you can use its properties (shiftDown, etc.) instead for assignments to those member values.