Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!netnews.upenn.edu!kings.wharton.upenn.edu!lau
From: lau@kings.wharton.upenn.edu (Yan K. Lau)
Newsgroups: comp.windows.ms
Subject: Re: Refresh problem for child window titlebar
Message-ID: <11561@netnews.upenn.edu>
Date: 1 Jun 89 15:56:33 GMT
References: <8906011349.AA04577@king.csri.toronto.edu>
Sender: news@netnews.upenn.edu
Reply-To: lau@kings.wharton.upenn.edu (Yan K. Lau)
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Organization: University of Pennsylvania
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In article <8906011349.AA04577@king.csri.toronto.edu> il@csri.toronto.edu (Indra Laksono) writes:
>
>I am writing a Presentation Manager program that is basically
>a client window controlling a child window.  Since the child
>window is on top of the client window, when processing
>WM_PAINT in the client window, I do WinInvalidateRect(childwindow,..
>as well as childwindowframe just before returning.
>The result is that the title bar is missing in the child window.
>
>Has anyone seen this problem?  A fix somewhere?
>
>il@theory.toronto.edu

I have noticed a similar problem under MS Windows.  In my case,
I had two child windows overlapping.  Painting the child window
underneath messed up the scroll bars on the child window sitting
on top.  Even a refresh on top window didn't fix the problem,
the up/down arrows and box were visible but the scroll bar outline
was gone.  I didn't have a title bar so I don't know if that would
have been messed up.  The only way I could fix the problem was to
specify clip siblings when creating the windows.  That meant that
I had to create the top (smaller) window first before creating the
window underneath.  This is a major problem because windows can't
be created "on the fly".  I don't know if a similar "solution" 
would work with the PM.

Yan. 
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