Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!nuchat!sugar!karl
From: karl@sugar.hackercorp.com (Karl Lehenbauer)
Newsgroups: comp.windows.ms
Subject: Show-stopper in wstdio.c/3.0 SDK tty sample app
Keywords: Win 3.0 SDK, tty sample app, wstdio.c, LocalAlloc, LocalLock
Message-ID: <6589@sugar.hackercorp.com>
Date: 21 Sep 90 03:11:30 GMT
Reply-To: karl@sugar.hackercorp.com (Karl Lehenbauer)
Organization: Sugar Land Unix - Houston
Lines: 21

The wstdio.c module in the tty sample application has some code that
is a guaranteed GP ever time.

In the initialization routine, stdioInit, the code does a LocalAlloc
to get a handle to some memory to use for registering a class with
windows.  It then CASTS THE HANDLE TO A POINTER AND TRIES TO REFERENCE
FIELDS WITH IT!  Looks like it needs to do a LocalLock on the
handle and use the address returned by LocalLock as a pointer, eh?

I guess just having a WNDCLASS structure created on the stack is no
good unless you know you're going to be large model only since
DS != SS.

By the way, with respect to all the people who are down on large model,
how big are your applications, anyway?  64K of code space doesn't really
go very far for any "real" application, I don't think.


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