wx.lib.iewin:is there any event occur when a new URL is loaded?

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# -*- coding:utf-8 -*-
import wx
import wx.lib.iewin as iewin

class MyApp(wx.App):
   def OnInit(self):
       self.frame = wx.Frame(None)
       self.panel=wx.Panel(self.frame)
       self.htmlctrl = iewin.IEHtmlWindow(self.panel,size=(304,202))
       self.htmlctrl.LoadUrl("http://www.gvlr.com")
       self.SetTopWindow(self.frame)
       self.frame.Show()
       self.Bind(wx.EVT_TEXT_URL,self.OnSizeChange,self.panel)
       return True
 
   def OnSizeChange(self,event):
       wx.MessageBox('size changed','wx.lib.iewin')


app = MyApp(0)
app.MainLoop()
==============
I want to change frame size when different url has loaded
is there any way?




       
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