# add the windows to the splitter and split it.
splitter2.SplitHorizontally(self.nb, self.log)
splitter.SplitVertically(self.tree, splitter2)
# add the windows to the splitter and split it.
splitter2.SplitHorizontally(self.nb, self.log)
splitter.SplitVertically(self.tree, splitter2)