Text Wrapping in Multiline wx.TextCtrl

I have a widget defined as:

    self.tcDesc = wx.TextCtrl(self, wx.ID_ANY, size=wx.Size(300, 70),
                              style=wx.TAB_TRAVERSAL|wx.TE_MULTILINE|wx.TE_LINEWRAP|
                              wx.TE_PROCESS_ENTER|wx.RAISED_BORDER|wx.HSCROLL)

   But, the displayed text does not wrap. Instead, it's one long line with a
horizontal scroll bar at the window bottom. What have I done incorrectly?

TIA,

Rich

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Richard B. Shepard, Ph.D. | The Environmental Permitting
Applied Ecosystem Services, Inc. | Accelerators(TM)
<http://www.appl-ecosys.com> Voice: 503-667-4517 Fax: 503-667-8863