The Far East GetTextExtent API Fails with Null LPNFit (176322)


The information in this article applies to:

  • Microsoft Windows NT Server 4.0 Terminal Server Edition
  • Microsoft Windows NT Workstation 3.51
  • Microsoft Windows NT Workstation 4.0
  • Microsoft Windows NT Server 3.51
  • Microsoft Windows NT Server 4.0
This article was previously published under Q176322

SYMPTOMS

For Far East versions of Windows NT that use DBCS character sets, passing a NULL LpnFit parameter to the GetTextExtentExPoint API may cause an access violation (AV). A Dr. Watson dialog box appears similar to:

An application error has occurred and an application error log is being
generated.

XXX.EXE

Exception: access violation (0xc0000005), Address: 0x77f52edb

NOTE: Xxx.exe is your custom application. Also, the address may be different, but the access violation code should be the same.

CAUSE

Debug analysis shows this error occurs the first time the contents of NULL LpnFit is accessed.

RESOLUTION

Obtain the updated Gdi32.dll file, for the Far East versions of Windows NT that use DBCS character sets.

To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

152734 How to Obtain the Latest Windows NT 4.0 Service Pack


STATUS

Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.
Microsoft has confirmed this to be a problem in Windows NT version 3.51. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.
Modification Type:MinorLast Reviewed:9/23/2005
Keywords:kbHotfixServer kbQFE kbbug kbfix KB176322
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