Re: Sending WM_PAINT parameters

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#2398

From: danzer
Date: Tue, 27 Feb 2007 22:09

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poojo hackma wrote:
> My mistake!
> 
> I just found that I should *never* use SendMessage (or PostMessage) with 
> WM_PAINT.
> 
> I found a different way to handle this by using an Invalidate() from within 
> my main thread then calling UpdateWindow(hParent) from my other thread.
> 
> Sorry for taking up your time.
> 
> Don't worry. I'm sure I'll have other stupid questions to ask. 
> 
> 

Using hParent in your "other thread" is not thread-safe.  See Gambit's 
explanation to me.

http://groups.google.com/group/borland.public.cppbuilder.vcl.components.using/browse_thread/thread/10b36291929e5d80/1cdbd4452defe29c?lnk=st&q=&rnum=6&hl=en#1cdbd4452defe29c

or

http://tinyurl.com/2yunb5

Danzer

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