Check validity of window id

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Submitted by Anonymous on Wed, 01/10/2001 - 19:53. Developers
This is probably a more of a general X question how can I check a window id before using it, to make sure the window exists, and hopefully not get a `bad window id` or `bad drawable` error.

Mon, 07/02/2012 - 11:35
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Mon, 07/02/2012 - 11:37