import wx class MyPanel(wx.Panel): def __init__(self,parent): wx.Panel.__init__(self,parent,-1) self.Bind(wx.EVT_PAINT,self.OnPaint) def OnPaint(self,evt): dc=wx.PaintDC(self) if __name__=="__main__": app=wx.PySimpleApp() frame=wx.Frame(None) panel=MyPanel(frame) frame.Show() app.MainLoop()