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https://issues.apache.org/jira/browse/XERCESC-2033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Scott Cantor closed XERCESC-2033.
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> Define _WIN32_WINNT for min supported version of Windows
> --------------------------------------------------------
>
> Key: XERCESC-2033
> URL: https://issues.apache.org/jira/browse/XERCESC-2033
> Project: Xerces-C++
> Issue Type: Improvement
> Components: Build
> Affects Versions: 3.1.0, 3.1.1, 3.1.2, 3.1.3, 3.1.4
> Environment: Windows
> Reporter: Lee Doron
> Priority: Minor
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> Microsoft makes changes to the Windows API with each OS release. These
> changes are reflected in the Windows SDK header files, which contain
> conditional code according to the minimum version of Windows you wish to
> support. This can be selected by defining preprocessor symbols -- see
> http://msdn.microsoft.com/en-us/library/aa383745.aspx. The macro _WIN32_WINNT
> is sufficient, or for finer granularity (by service pack), you can also
> define NTDDI_VERSION. When you don't define these, they get set in
> sdkddkver.h to the latest version supported by the SDK; for VS 2012, that's
> Windows 8.0. If you use any APIs that have changed in recent versions, then
> the DLL might not work properly with older versions of Windows (e.g. XP).
> I haven't actually seen any failures with Xerces, which is why I didn't mark
> this as a bug, but I think you should add this symbol to the preprocessor
> definitions to be on the safe side. I did it quickly in the Visual Studio
> configuration, or it could be done in the source code before including
> <windows.h>.
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