我的源程序如下

import wx
class mp3infoprocessFrame(wx.Frame):
    def __init__(self,parent,id):
        wx.Frame.__init__(self,parent,id,"test",size=(500,500),style=
wx.DEFAULT_FRAME_STYLE)
        panel=wx.Panel(self)
        panel.SetBackgroundColour('White')
if __name__=="__main__":
    apple=wx.PySimpleApp()
    frame=mp3infoprocessFrame(parent=None,id=-1)
    frame.Show(True)
    apple.MainLoop

直接运行这个程序，结果也正确

但是等我把这个frame关了以后，再运行这个程序，就会出现
PyNoAppError: The wx.App object must be created first!的提示，这是什么原因呢？
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.exoweb.net/pipermail/python-chinese/attachments/20060407/7097f250/attachment.html