self._minsize.SetValue(    str(win.GetMinSize()) )
         self._bestsize.SetValue(   str(win.GetBestSize()) )
         self._adjbstsize.SetValue( str(win.GetAdjustedBestSize()) )
-        self._bestfit.SetValue(    str(win.GetBestFittingSize()) )
+        self._bestfit.SetValue(    str(win.GetEffectiveMinSize()) )
 
     def Clear(self):
         self._size.SetValue("")
         sb = wx.StaticBox(self, -1, label)
         self._fgtxt = wx.TextCtrl(self, -1, "", style=wx.TE_READONLY)
         self._fgclr = wx.Panel(self, style=wx.SIMPLE_BORDER)
-        self._fgclr.SetSizeHints((20,20))
+        self._fgclr.SetMinSize((20,20))
         self._bgtxt = wx.TextCtrl(self, -1, "", style=wx.TE_READONLY)
         self._bgclr = wx.Panel(self, style=wx.SIMPLE_BORDER)
-        self._bgclr.SetSizeHints((20,20))
+        self._bgclr.SetMinSize((20,20))
 
         # setup the layout
         fgs = wx.FlexGridSizer(2, 3, 5, 5)