Hello everyone,
I'm building and application which will display a collection
of several wxpanels each of which displays a
FigureCanvasWxAgg with a particular subplot.
The user is allowed to remove these panels.
However, after a panel is deleted (call wxPanel.Destroy()),
and the mouse moves over the now empty space, I get the
following exception:
File
"/usr/lib/pymodules/python2.6/matplotlib/backends/backend_wx.py",
line 1316, in _onMotion
FigureCanvasBase.motion_notify_event(self, x, y,
guiEvent=evt)
File
"/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py",
line 1244, in motion_notify_event
guiEvent=guiEvent)
File
"/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py",
line 899, in __init__
LocationEvent.__init__(self, name, canvas, x, y,
guiEvent=guiEvent)
File
"/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py",
line 817, in __init__
self._update_enter_leave()
File
"/usr/lib/pymodules/python2.6/matplotlib/backend_bases.py",
line 844, in _update_enter_leave
last.canvas.callbacks.process('axes_leave_event', last)
File
"/usr/lib/python2.6/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py",
line 14586, in __getattr__
raise PyDeadObjectError(self.attrStr % self._name)
wx._core.PyDeadObjectError: The C++ part of the
FigureCanvasWxAgg object has been deleted, attribute access
no longer allowed.
Looks like the deleted canvas is still listening for mouse
move events.
How can I prevent this?
Thank you,
Sandy
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