'Set the join style to be one of (\'miter\', \'round\', \'bevel\')'

def set_joinstyle(self, js):

    DEBUG_MSG(u'set_joinstyle()', 1, self)
    self.select()
    GraphicsContextBase.set_joinstyle(self, js)
    self._pen.SetJoin(GraphicsContextWx._joind[self._joinstyle])
    self.gfx_ctx.SetPen(self._pen)
    self.unselect()
