DOCUMENT:Q76940  06-NOV-1999  [win16sdk]
TITLE   :PRB: Value of hPrevInstance Incorrect
PRODUCT :Microsoft Windows Software Development Kit
PROD/VER:WINDOWS:3.0,3.1
OPER/SYS:
KEYWORDS:kb16bitonly

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Windows Software Development Kit (SDK) versions 3.0, 3.1 
-------------------------------------------------------------------------------

NOTE: The information below does not apply to Visual C++.

SYMPTOMS
========

The value of hPrevInstance is not equal to NULL, even though there are no other
instances of the program running.

CAUSE
=====

The C Run-time library used by the linker does not match the memory model
specified in the C compiler.

RESOLUTION
==========

Change the run-time library used by the linker to reflect the appropriate memory
model used in the C compiler.

MORE INFORMATION
================

The following table associates the memory model with the C Run-time library
names:

   Memory Model  Compiler Switch  Run-Time Library
   ------------  ---------------  ----------------

   Small              -AS         SLIBCEW.LIB
   Medium             -AM         MLIBCEW.LIB
   Large              -AL         LLIBCEW.LIB
   Compact            -AC         CLIBCEW.LIB

Additional query words: 3.00 3.10 no32bit

======================================================================
Keywords          : kb16bitonly 
Technology        : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310
Version           : WINDOWS:3.0,3.1

=============================================================================

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