wxFrame's OnCreateStatusBar() in wxPython?

I'm trying to instantiate a customize wxStatusBar subclass from within a
wxFrame by using the OnCreateStatusBar() function that should be called when
CreateStatusBar() is called. However, it doesn't seem as though this
function even gets called. I'm wondering if this functionality exists or if
I have to manually instantiate the my wxStatusBar and add it to the wxFrame.

I don't have the code here but it would resemble something on the order of:

class MyFrame(wxFrame):
    ...
        self.statusBar = CreateStatusBar(2, wxST_SIZEGRIP)
    ...

    def OnCreateStatusBar(self, number, style, id, name):
        # instantiate my statusBar class and return it.
       ...

Thanks!
Charlton

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