>  Uhm, can you see what happens if you call:
>  print wx.GetTopLevelWindows()

You are right:
def dologout(s,event):
            s.f.Close(True)
            s.f.Destroy()
            toplevs =  wx.GetTopLevelWindows()
            print toplevs
<genret.GR1Frame; proxy of <Swig Object of type 'wxFrame *' at 0x852b108>  >, 
<wx.html.HtmlHelpDialog; proxy of <Swig Object of type 'wxHtmlHelpDialog *' 
at 0x8776740>  >]

But no combination of del, Close() or Destroy makes that HelpDialog go away.

>   Also, have
>  you tried giving a parent window to HtmlHelpController to see if the
>  problem disappears? I have never used HTMLHelpController but the fact
>  that you have to hit Ctrl+C on Windows means that some TLWs are not
>  destroyed when the app exits and one way to insure that, IIUC, is to
>  give a parent to those HtmlHelpController.
> 
I don't think I understand how to do this.  What frame?  Display() is called 
from many frames.  The constructor stands alone.
wxHtmlHelpController() has no argument for parent.
Thanks.
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