FIX: Dont allow paint events after destruction

larsoner · Feb 6, 2020 · c2a8a23 · c2a8a23
1 parent 749199d
commit c2a8a23
Showing 1 changed file with 9 additions and 1 deletion.
diff --git a/tvtk/pyface/ui/qt4/QVTKRenderWindowInteractor.py b/tvtk/pyface/ui/qt4/QVTKRenderWindowInteractor.py
@@ -284,7 +284,7 @@ def __init__(self, parent=None, **kw):
         # before its parent thus allowing cleanup of VTK elements.
         self._hidden = QWidget(self)
         self._hidden.hide()
-        self._hidden.destroyed.connect(self.Finalize)
+        self._hidden.destroyed.connect(self._destroyed)
 
     def __getattr__(self, attr):
         """Makes the object behave like a vtkGenericRenderWindowInteractor"""
@@ -324,6 +324,14 @@ def _get_win_id(self):
             WId = pythonapi.PyCapsule_GetPointer(WId, name)
         return str(int(WId))
 
+    def _no_paint(self, ev):
+        pass
+
+    def _destroyed(self):
+        # ensure no paint events get called again
+        self.paintEvent = self._no_paint
+        self.Finalize()
+
     def Finalize(self):
         '''
         Call internal cleanup method on VTK objects