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1993-11-23
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DOCUMENT:Q105733 22-NOV-1993 [W_NT]
TITLE :SetCaret API May Not Work Correctly in Win32 Applications
PRODUCT :Windows NT
PROD/VER:3.10
OPER/SYS:WINDOWS
KEYWORDS:BUGLIST3.10 FIXLIST3.10.001
----------------------------------------------------------------------
The information in this article applies to:
- Microsoft Windows NT operating system version 3.1
- Microsoft Windows NT Advanced Server version 3.1
----------------------------------------------------------------------
SYMPTOMS
========
SetCaret API does not work correctly in multi-threaded Win32-based
applications.
Code with the following logic fails:
Thread 1: Creates a window and starts another thread.
Thread 2: Uses an API to synchronize the two threads' "Input State,"
attempts to write to the window of Thread 1, and then tries to set the
caret through SetCaret().
STATUS
======
Microsoft has confirmed this to be a problem in Windows NT and Windows NT
Advanced Server version 3.1. This problem was corrected in the latest U.S.
Service Pack for Windows NT and Windows NT Advanced Server version 3.1. For
information on obtaining the Service Pack, query on the following word in
the Microsoft Knowledge Base (without the spaces):
S E R V P A C K
Additional reference words: 3.10
KBCategory:
KBSubCategory: 32ap
=============================================================================
THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.
Copyright Microsoft Corporation 1993.