Path: utzoo!attcan!uunet!lll-winken!ames!mailrus!bbn!apple!well!brent
From: brent@well.UUCP (Brent Southard)
Newsgroups: comp.windows.ms
Subject: Re: Does DialogBox preserve Data Segment Address?
Message-ID: <10693@well.UUCP>
Date: 12 Feb 89 22:58:35 GMT
Expires: 12 Feb 89 22:58:33 GMT
References: <460@msn005.misemi> <1366@agora.UUCP> <3816@metavax.UUCP>
Reply-To: brent@well.UUCP (Brent Southard)
Organization: Whole Earth 'Lectronic Link, Sausalito, CA
Lines: 17

In article <3816@metavax.UUCP> adam@metavax.UUCP (Adam Hoffman -- Mr. Engineering) writes:
>I have a feeling that DialogBox (the function) does nothing
>special about locking the data segment while it calls PeekMessage or
>whatever it calls... 

You are absolutely correct.  Your data segment may very well move during
calls to MessageBox, DialogBox, or other functions that directly or
indirectly call PeekMessage et all, thus losing the context.  You must be
very careful not to hold far pointers to local data across such function
calls.

	brent
-- 
Brent Southard, ImageTech Corp.   |  Everybody's trying to be a friend of mine,
Usenet:  ...well!brent            |  Even a dog can shake hands. - W. Zevon
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