plot.py 文件源码

def Clear(self):
        """Erase the window."""
        self.last_PointLabel = None  # reset pointLabel
        dc = wx.BufferedDC(wx.ClientDC(self.canvas), self._Buffer)
        bbr = wx.Brush(self.GetBackgroundColour(), wx.SOLID)
        dc.SetBackground(bbr)
        dc.SetBackgroundMode(wx.SOLID)
        dc.Clear()
        if self._antiAliasingEnabled:
            try:
                dc = wx.GCDC(dc)
            except Exception:
                pass
        dc.SetTextForeground(self.GetForegroundColour())
        dc.SetTextBackground(self.GetBackgroundColour())
        self.last_draw = None