wxPython实现窗口用图片做背景

#!/usr/bin/env python 
# -*- encoding:utf-8 -*- 
 
import wx 
 
 
class MyPanel(wx.Panel): 
 def __init__(self,parent,id): 
  wx.Panel.__init__(self,id) 
  try: 
   image_file = 'image.jpg' 
   to_bmp_image = wx.Image(image_file,wx.BITMAP_TYPE_ANY).ConvertToBitmap() 
   self.bitmap = wx.StaticBitmap(self,-1,to_bmp_image,(0,0)) 
   image_width = to_bmp_image.GetWidth() 
   image_height = to_bmp_image.GetHeight() 
   set_title = '%s %d x %d' % (image_file,to_bmp_image.GetWidth(),to_bmp_image.GetHeight()) 
   parent.SetTitle(set_title) 
  except IOError: 
   print 'Image file %s not found' % image_file 
   raise SystemExit 
  #创建一个按钮 
  self.button = wx.Button(self.bitmap,label='Test',pos=(10,10)) 
if __name__ == '__main__': 
 app = wx.PySimpleApp() 
 frame = wx.Frame(None,'Image',size=(300,300)) 
 my_panel = MyPanel(frame,-1) 
 frame.Show() 
 app.MainLoop()