Fix Winproc doing improper Unicode <=> ANSI conversion

[mehmet yasar]

Hi all,

I was trying to fix the crash with VisualC++ 6 IDE when opening
the Tools/Options/Format dialogbox and I have found that
WINPROC_MapMsg32ATo32W was converting an lparam sent by
CB_FINDSTRINGEXACT to Unicode.

This is not correct since lparam is not always a string and may
be a DWORD. Now we are checking this before doing conversion.

I've also found and fixed similar buggy behavior with :
CB_FINDSTRING
CB_SELECTSTRING
LB_FINDSTRING
LB_FINDSTRINGEXACT
LB_SELECTSTRING

BTW this patch modifies these functions too :
WINPROC_UnmapMsg32ATo32W
WINPROC_MapMsg32WTo32A
WINPROC_UnmapMsg32WTo32A

Mehmet YASAR


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