wxpython-生命周期

import wx
import sys
class Frame(wx.Frame):
    """Frame class that displays an image"""
    def __init__(self,parent,id,title):
        print "Frame __init__"
        wx.Frame.__init__(self,parent,id,title)
class App(wx.App):
    def __init__(self,redirect=True,filename=None):
        print "App __init__"
        wx.App.__init__(self,redirect,filename)
    def OnInit(self):
        print "OnInit"
        self.frame = Frame(parent=None,id=1,title="startup")

        self.frame.Show()
        print sys.stderr,"A pretend error message"
        return True
    def OnExit(self):
        print "OnExit"
def main():
    app = App(redirect=False)#1
    print "before MailLoop"
    app.MainLoop()#2
    print "after MainLoop"

if __name__=="__main__":
    main()


App __init__
OnInit
Frame __init__
', mode 'w' at 0x0000000001D16150> A pretend error message
before MailLoop
OnExit
after MainLoop