Microsoft KB Archive/49838

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PRB: GlobalUnlock Can Cause Fatal Exit 0x02F0

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Q49838

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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 &quot;GlobalUnlock: Object usage count underflow&quot; 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

Keywords : kb16bitonly

Issue type :

Technology : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK300 kbWinSDK310