Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!emory!wa4mei!nanovx!msa3b!kevin
From: kevin@msa3b.UUCP (Kevin P. Kleinfelter)
Newsgroups: comp.windows.ms.programmer
Subject: Modeless Dialogs vs Globals
Message-ID: <1488@msa3b.UUCP>
Date: 7 Jan 91 20:47:59 GMT
Organization: Dun and Bradstreet Software, Inc., Atlanta, GA
Lines: 27

It appears that the dialog procedure for a modeless dialog cannot
access ANY global data.  This would include literal strings, because
they go into the program's global data area.

For example,
   MessageBox (NULL, (LPSTR) "Literal", NULL, MB_OK);

from within a modeless dialog procedure puts trash in the message box.

However,
   foo [0] = 'O';
   foo [1] = 'K';
   foo [2] = 0;
   MessageBox (NULL, (LPSTR) foo, NULL, MB_OK);

puts OK in a message box.

Am I correct in surmising that global data is inaccessable from a
modeless dialog, and that this includes literal strings?

Is this actually DOCUMENTED somewhere?  Is it appropriate for a
programmer to have to know where his compiler puts literal strings?
-- 
Kevin Kleinfelter @ Dun and Bradstreet Software, Inc (404) 239-2347
{emory,gatech}!nanovx!msa3b!kevin

Soon to become {emory,gatech}!nanovx!dbses0!kevin  (But not yet!)