-        shadowClr    = wxSystemSettings_GetColour(wxSYS_COLOUR_BTNSHADOW)
-        highlightClr = wxSystemSettings_GetColour(wxSYS_COLOUR_BTNHIGHLIGHT)
-        self.shadowPen    = wxPen(shadowClr, 1, wxSOLID)
-        self.highlightPen = wxPen(highlightClr, 1, wxSOLID)
-        self.blackPen     = wxPen(wxBLACK, 1, wxSOLID)
+        shadowClr    = wx.SystemSettings_GetColour(wx.SYS_COLOUR_BTNSHADOW)
+        highlightClr = wx.SystemSettings_GetColour(wx.SYS_COLOUR_BTNHIGHLIGHT)
+        self.shadowPen    = wx.Pen(shadowClr, 1, wx.SOLID)
+        self.highlightPen = wx.Pen(highlightClr, 1, wx.SOLID)
+        self.blackPen     = wx.Pen(wx.BLACK, 1, wx.SOLID)