def InitBuffer(self):
"""Initialize the bitmap used for buffering the display."""
size = self.GetClientSize()
- self.buffer = wx.EmptyBitmap(size.width, size.height)
+ self.buffer = wx.EmptyBitmap(max(1,size.width), max(1,size.height))
dc = wx.BufferedDC(None, self.buffer)
dc.SetBackground(wx.Brush(self.GetBackgroundColour()))
dc.Clear()