FIX: don't try to use non-standard functions on standard status bars

tacaswell · tacaswell · commit ce0d8c077663 · 2020-05-13T18:01:18.000-04:00
closes #17085
diff --git a/lib/matplotlib/backends/backend_wx.py b/lib/matplotlib/backends/backend_wx.py
@@ -1501,7 +1501,7 @@ def statbar(self):
 
     def set_message(self, s):
         status_bar = self.GetTopLevelParent().GetStatusBar()
-        if status_bar is not None:
+        if status_bar is not None and hasattr(status_bar, 'set_function'):
             status_bar.set_function(s)
 
     def set_history_buttons(self):
