[OT] Uniscribe in Windows XP SP2

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I apologise to those who have no interest in Uniscribe, but I'm posting this
question here because I know there are people on the list who know about
Uniscribe, and I don't know of any other forum where I can ask questions
about it.

We have an application that uses Uniscribe for text layout. It works fine on
Windows XP Gold and SP1, using the versions of Uniscribe bundled with those
OSs. When the application is run on XP SP2, justified text doesn't look
right: letters overlap, for example.

Apparently this app uses a mix of Win32 calls and Uniscribe. I believe it
measures text using a Win32 call, then uses that information to adjust the
position of runs created with Uniscribe. I think it would be better to use
Uniscribe consistently - but nonetheless, this approach worked with previous
versions of Windows.

Are you aware of any change in Uniscribe in XP SP2 - of in the behaviour of
the Win32 functions like GetTextExtent - that might account for this
problem?

Thanks!

- rick cameron

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