Create pen width combo box

def _create_penwidth_combo(self):
        """Create pen width combo box"""

        choices = map(unicode, xrange(12))
        self.pen_width_combo = \
            _widgets.PenWidthComboBox(self, choices=choices,
                                      style=wx.CB_READONLY, size=(50, -1))

        self.pen_width_combo.SetToolTipString(_(u"Border width"))
        self.AddControl(self.pen_width_combo)
        self.Bind(wx.EVT_COMBOBOX, self.OnLineWidth, self.pen_width_combo)