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From: wwang@osf.org ("Weidong Wang from OSF")
Newsgroups: comp.windows.x.motif
Subject: Re: What is the best way to iconify/deiconify?
Message-ID: <9105102047.AA29302@osfsun>
Date: 10 May 91 13:47:02 GMT
References: <TOML.91May8101432@marvin.Solbourne.COM>
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toml@Solbourne.COM(Tom LaStrange) wrote:
  >  
  >  What if the window changes state between the time you you get the property
  >  and return it?

You get another PropertyNotify event.

  > You should watch for and keep track of MapNotify and
  >  UnmapNotify events if you want to track your current state.
  >  

Not true. A window can have three states: Normal, Iconic, and Withdrawn.
When you unmap a window (you will get a UnmapNotify event), the window state
changes from Normal/Iconic to WithDrawn, not Iconic.

You can use MapNotify event to know that the window state has changed from 
Iconic/WithDrawn to Normal.