fix bug #3690: don't call evt.Skip() when window has just been destroyed

DietmarSchwertberger · DietmarSchwertberger · commit 2ba852f28b53 · 2018-02-11T14:11:44.000+01:00
diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
@@ -1007,14 +1007,16 @@ def _get_key(self, evt):
     def _onKeyDown(self, evt):
         """Capture key press."""
         key = self._get_key(evt)
-        evt.Skip()
         FigureCanvasBase.key_press_event(self, key, guiEvent=evt)
+        if self:
+            evt.Skip()
 
     def _onKeyUp(self, evt):
         """Release key."""
         key = self._get_key(evt)
-        evt.Skip()
         FigureCanvasBase.key_release_event(self, key, guiEvent=evt)
+        if self:
+            evt.Skip()
 
     def _set_capture(self, capture=True):
         """control wx mouse capture """
