wxgraphics.py 文件源码

def refresh(self):
        dc = wx.MemoryDC(self.drawingBuffer)
        dc.SelectObject(self.drawingBuffer)

        dc.SetBackground(wx.Brush(self.background, style=wx.SOLID))
        dc.Clear()

        gc = wx.GraphicsContext.Create(dc)

        # do not draw if window is very small, right solution? XXX - idfah
        if self.winRadius < 1.0e-3:
            return

        self.draw(gc)

        dc.SelectObject(wx.NullBitmap)
        self.triggerRepaint()