I guess to be more clear here is a small code snippet that shows what is happening more readably. Hence the underscores question.
class MainAuiManager(aui.AuiManager): def __init__(self, managed_window=None, agwFlags=0) aui.AuiManager.__init__(self, managed_window, agwFlags) ## self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick) self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick_) self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick__) self.Bind(wx.EVT_LEFT_DCLICK, self.OnLeftDClick___) # etc... ## def OnLeftDClick(self, event): ## """This will override the aui.AuiManager.OnLeftDClick event method.""" ## event.Skip() ## print('OnLeftDClick') def OnLeftDClick_(self, event): """This will extend the aui.AuiManager.OnLeftDClick event method.""" event.Skip() print('OnLeftDClick_') def OnLeftDClick__(self, event): """This will extend the aui.AuiManager.OnLeftDClick event method.""" event.Skip() print('OnLeftDClick__') def OnLeftDClick___(self, event): """This will extend the aui.AuiManager.OnLeftDClick event method.""" event.Skip() print('OnLeftDClick___') -- https://mail.python.org/mailman/listinfo/python-list