return str(self.__class__).split(".")[-1][:-2]
 
     def Delete(self):
+        """
+        Fully disconnect this shape from parents, children, the
+        canvas, etc.
+        """
         if self._parent:
             self._parent.GetChildren().remove(self)
 
+        for child in self.GetChildren():
+            child.Delete()
+
         self.ClearText()
         self.ClearRegions()
         self.ClearAttachments()
         """Flash the shape."""
         if self.GetCanvas():
             dc = wx.ClientDC(self.GetCanvas())
-            self.GetCanvas.PrepareDC(dc)
+            self.GetCanvas().PrepareDC(dc)
 
             dc.SetLogicalFunction(OGLRBLF)
             self.Draw(dc)
         dc.SetLogicalFunction(OGLRBLF)
 
         bound_x, bound_y = self.GetBoundingBoxMin()
-        self.GetEventHandler().OnEndSize(bound_x, bound_y)
+        self.GetEventHandler().OnBeginSize(bound_x, bound_y)
 
         # Choose the 'opposite corner' of the object as the stationary
         # point in case this is non-centring resizing.
             return None
         if self._penColour=="Invisible":
             return None
-        self._actualPenObject = wx.ThePenList.FindOrCreatePen(self._penColour, 1, self._penStyle)
+        self._actualPenObject = wx.Pen(self._penColour, 1, self._penStyle)
         return self._actualPenObject
 
     def SetText(self, s):