TreeView notifications fix (take 2)

[Mike Hearn]

As per Dimis suggestion, here is a more streamlined version of the
patch.

ChangeLog:

- Make IsWindowUnicode check dialog wndprocs

-- 
Mike Hearn <m.hearn at signal.qinetiq.com>
QinetiQ - Malvern Technology Center
-------------- next part --------------
A non-text attachment was scrubbed...
Name: iswindowunicode.patch
Type: text/x-patch
Size: 836 bytes
Desc: not available
Url : http://www.winehq.org/pipermail/wine-patches/attachments/20030319/62df23cd/iswindowunicode.bin