title: wxPython wx.Close create runtime error
body: <p>When I try to call self.Close(True) in the top level Frame's EVT_CLOSE event handler, it raises a RuntimeError: maximum recursion depth exceeded. Here's the code:</p>
  
  <pre><code>from PicEvolve import PicEvolve
  import wx
  
  class PicEvolveFrame(wx.Frame):
  
      def __init__(self, parent, id=-1,title="",pos=wx.DefaultPosition,
           size=wx.DefaultSize, style=wx.DEFAULT_FRAME_STYLE,
           name="frame"):
  
          wx.Frame.__init__(self,parent,id,title,pos,size,style,name)
  
          self.panel = wx.ScrolledWindow(self)
          self.panel.SetScrollbars(1,1,600,400)
  
          statusBar = self.CreateStatusBar()
  
          menuBar = wx.MenuBar()
          menu1 = wx.Menu()
          m = menu1.Append(wx.NewId(), "&amp;Initialize", "Initialize population with random images")
          menuBar.Append(menu1,"&amp;Tools")
          self.Bind(wx.EVT_MENU,self.OnInit,m)
          self.Bind(wx.EVT_CLOSE,self.OnClose)
  
          self.SetMenuBar(menuBar)
  
      def OnInit(self, event):
  
          dlg = wx.TextEntryDialog(None,"Enter Population Size:","Population Size")
          popSize = 0
          if dlg.ShowModal() == wx.ID_OK:
              popSize = int(dlg.GetValue())
              self.pEvolver = PicEvolve(popSize,(200,200),True)
  
          box = wx.BoxSizer(wx.VERTICAL)
  
          filenames = []
          for i in range(popSize):
              filenames.append("img"+str(i)+".png")
          for fn in filenames:
              img = wx.Image(fn,wx.BITMAP_TYPE_ANY)
              box.Add(wx.StaticBitmap(self.panel,wx.ID_ANY,wx.BitmapFromImage(img)), 0,wx.BOTTOM)
  
          self.panel.SetSizer(box)
  
      def OnClose(self,event):
  
          self.Close(True)
  
  class PicEvolveApp(wx.App):
  
      def OnInit(self):
  
          self.frame = PicEvolveFrame(parent=None,title="PicEvolve")
          self.frame.Show()
          self.SetTopWindow(self.frame)
          return True
  
  if __name__ == "__main__":
  
      app = PicEvolveApp()
      app.MainLoop() 
  </code></pre>