-        if 0:  # a test case for catching wx.PyAssertionError
-
-            #wx.GetApp().SetAssertMode(wx.PYAPP_ASSERT_SUPPRESS)
-            #wx.GetApp().SetAssertMode(wx.PYAPP_ASSERT_EXCEPTION)
-            #wx.GetApp().SetAssertMode(wx.PYAPP_ASSERT_DIALOG)
-            #wx.GetApp().SetAssertMode(wx.PYAPP_ASSERT_EXCEPTION | wx.PYAPP_ASSERT_DIALOG)
-
-            try:
-                bmp = wx.Bitmap("nosuchfile.bmp", wx.BITMAP_TYPE_BMP)
-                mask = wx.MaskColour(bmp, wx.BLUE)
-            except wx.PyAssertionError:
-                self.log.write("Caught wx.PyAssertionError!  I will fix the problem.\n")
-                bmp = images.getTest2Bitmap()
-                mask = wx.MaskColour(bmp, wx.BLUE)
-        else:
-            bmp = images.getTest2Bitmap()
-            mask = wx.MaskColour(bmp, wx.BLUE)
-
-        bmp.SetMask(mask)
-        wx.BitmapButton(self, 30, bmp, (160, 20),
-                       (bmp.GetWidth()+10, bmp.GetHeight()+10))
-        self.Bind(wx.EVT_BUTTON, self.OnClick, id=30)
+        b = wx.Button(self, 40, "Flat Button?", (20,150), style=wx.NO_BORDER)
+        b.SetToolTipString("This button has a style flag of wx.NO_BORDER. On some platforms that will give it a flattened look.")
+        self.Bind(wx.EVT_BUTTON, self.OnClick, b)