Re: DefWindowProc API Reference

Tech-Archive recommends: Fix windows errors by optimizing your registry

Jeff Partch [MVP] wrote:

> Christian, I can tell you that in some version of the API under some 
circumstance, DefWindowProc does check for WM_NCDESTROY and does "make an
exception" so that "themes... get a chance to do cleanup".

Yes, it's for themed apps on XP (RemoveProp() and so on); otherwise, it's never handled...
.

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