DOCUMENT:Q49838  05-NOV-1999  [win16sdk]
TITLE   :PRB: GlobalUnlock() Can Cause Fatal Exit 0x02F0
PRODUCT :Microsoft Windows Software Development Kit
PROD/VER:WINDOWS:3.0,3.1
OPER/SYS:
KEYWORDS:kb16bitonly

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The information in this article applies to:

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

Under the debugging version of Windows, when an application calls the
GlobalUnlock() API, a FatalExit 0x02F0 "GlobalUnlock: Object usage count
underflow" error occurs.

CAUSE
=====

The application called the GlobalUnlock() API more times that it called the
GlobalLock() API. Under the retail version of Windows, the function returns the
normal value 0 in these circumstances.

RESOLUTION
==========

Match each GlobalLock() call with a GlobalUnlock() call.

Additional query words: 3.00 3.10 fatal exit 2F0 02F0 2F0h

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

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