[Paraview] ParaView/OverView build failure on WinXP: Cannot open include file: 'QHelpEngine'

[Zak Burke]

I'm trying to build ParaView, including the Overview informatics
client, on Windows XP using Visual C++ 2008 Express Edition. The
pqWidgets target is failing with the following error:

   pqHelpWindow.cxx
   ..\..\..\ParaView3CVS\Qt\Widgets\pqHelpWindow.cxx(36) : fatal error
C1083: Cannot open include file: 'QHelpEngine': No such file or
directory

My CMakeCache.txt files includes the following entry:

    QT_QTHELP_INCLUDE_DIR:PATH=C:/Qtvcpp/4.5.2/include/QtHelp