b.SetConstraints(layoutf.Layoutf('t_#1;l>#1;h*;w*', (self.panelD,)))
wx.StaticText(self.panelD, -1, "Panel D", (4, 4)).SetBackgroundColour(wx.GREEN)
b.SetConstraints(layoutf.Layoutf('t_#1;l>#1;h*;w*', (self.panelD,)))
wx.StaticText(self.panelD, -1, "Panel D", (4, 4)).SetBackgroundColour(wx.GREEN)