vbox = wx.BoxSizer(wx.VERTICAL)

edPanel = wx.Panel(self, -1, style = wx.NO_FULL_REPAINT_ON_RESIZE)
stc = gcSTC(edPanel, -1)

vbox.Add(toolbar, 0, wx.EXPAND, 5)
vbox.Add(edPanel, 1, wx.EXPAND)
self.SetSizer(vbox)
self.SetAutoLayout(True)