Re: Feedback on recursive file search...

From: Schmidt (sss_at_online.de)
Date: 11/18/04 

Date: Thu, 18 Nov 2004 03:52:28 +0100

"Mark Alexander Bertenshaw" <mark.bertenshaw@virgin.net> schrieb im
Newsbeitrag news:OeWVbeQzEHA.3840@tk2msftngp13.phx.gbl...

> >> Why do that when you can call the Unicode version of the API calls?
> >> (I assume that you aren't writing for Win95/98/Me anymore :-) ).
> > Because VB converts String-Params in API-Calls *always* to ANSI,
> > regardless if the Function is the 'A' or the 'W'-Version - if the
> > Params are Byref or Byval.
> >
> > If you can speed up the Unicode-Function 'FastFindW' in my posted
> > example without using ByteArrays - I would like to see how.
>
> What? You're still using Declares?
Of course, it's the normal way for the most VB-Programmers.
Copy'nPaste - full control - no need to recompile a typelib, if one wants to
change some Parameter to another, better suiting type.

> That's what type libraries are for,
not only - I use them most of the time to cast to special interfaces.

> because Unicode declarations of parameters are never converted.
Ack.

> Google for WinU.tlb for a good start.
I know this Tlbs from Bruce McKinney but never used them.

Olaf

BTW:
I've checked WinU.tlb in and changed the classic GetFilesAPI-Loop to use it
(remove the 'A' from FindFirst File and FindNextFile).
Now without implicite Unicode/ANSI-Conversion - but it's still 30% slower
than the universal approach FindFastA and 50% slower than FindFastW due to
some other positive effects of the bytearray-usage (fast Dot-Test) and more
efficient Buf-Copy compared with StripNulls.

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