another fix for undo/redo

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44838 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/wx/tools/XRCed/params.py

@@ -36,6 +36,7 @@ class PPanel(wx.Panel):
         wx.Panel.__init__(self, parent, -1, name=name)
         self.modified = self.freeze = False
     def Enable(self, value):
+        self.enabled = value
         # Something strange is going on with enable so we make sure...
         for w in self.GetChildren():
             w.Enable(value)