[vlc-devel] Re: wxUnicode: no support < Win-NT/2000/XP

[· zcot ·]

Damien,

oh excellent! ok, yes, I guess I was missing pieces about the understanding 
of it.


alrighty then, sorry for the interruption :)



>From: Damien Fouilleul <Damien.Fouilleul at laposte.net>
>Reply-To: vlc-devel at videolan.org
>To: vlc-devel at videolan.org
>Subject: [vlc-devel] Re: wxUnicode: no support < Win-NT/2000/XP
>Date: Sat, 08 Oct 2005 18:43:46 +0100
>
>zcot,
>
>when you compile wxWidgets UNICODE for win32, you will typically get this 
>warning during a configure
>...
>checking for main in -lunicows... no
>configure: WARNING: Compiler doesn't support MSLU (libunicows.a), disabled.
>Applications will only run on Windows NT/2000/XP!
>...
>
>in order to support older windows platform, the libunicows library needs be 
>present when wxWidgets is compiled.
>
>it is available at:
>
>http://libunicows.sourceforge.net/
>
>in order to make it work on WIN9x/ME, one will need to install MSLU or 
>opencow.dll, available at the following links
>
>http://www.microsoft.com/globaldev/handson/dev/mslu_announce.mspx
>http://opencow.sourceforge.net/
>
>
>Damien
>
>· zcot · wrote:
>
>>hi guys,
>>
>>the latest sources have lost support for Win9x. Unfortunately wxWidgets 
>>just bombs that whole scenerio and offers a friendly dialog instead:
>>
>>wxWidgets Fatal Error:
>>This program uses Unicode and requires Windows NT/2000/XP.
>>Program aborted.
>>
>>I've been messing around trying to figure a way around it. I can imagine a 
>>few variations but don't quite have the knowledge and experience to 
>>implement it, or frankly to even attempt to implement it.. O_O
>>
>>Three solutions I have thought are possible are:
>>
>>1. don't support win9x.
>>2. don't use unicode on win9x.
>>3. use unicode on Win9x.
>>
>>=======================
>>
>>#1. http://www.videolan.org/stats/200509/awstats.videolan.osdetail.html
>>
>>#2. if there were 2 options for the static libs within the contrib then I 
>>could imagine this working.. -the new existing one with unicode and one as 
>>before w/o. But then what happens in configure? and bootstrap maybe? It 
>>appears from my perspective(of being fairly clueless of all the auto file 
>>and configurationing etc.) that tweaks could span quite a few files if 
>>this was to be a viable option.
>>
>>And I would guess that in some configuration sequence the system would 
>>have to be checked for version appropriately.. -or maybe that part could 
>>be as simple as a config opt? --with-win9x or --with-winnt ? who knows..
>>
>>so that thought involves seeing the 2 variations of systems as different 
>>with one being able to use unicode and the other not.. -maybe not a great 
>>design. And I guess this would mean crazy programming too with alot of 
>>#ifdef undef !def !labh #b-lah stuff everywhere.
>>
>>This design seems to have quite a bit of drawback.. -at least from my 
>>perspective.
>>
>>However, I've dug out some more info and I do know for a fact that unicode 
>>programs can run on win9x systems, and apparently it can be done with wx 
>>as well, though there are some drawbacks here too mainly being that a 3rd 
>>party dll will be needed(unicows.dll).
>>
>>/* And then additionally who knows how the wxWidgets lib will develop to 
>>support this issue? and how and/or when? I realize that the some of the 
>>exact same lib calls did not act bad in previous versions and were 
>>offering forward "limited support" toward unicode, but now those same 
>>calls are not even non-unicode compatible it seems. wth?! blegh.. */
>>
>>anyway, #3. use unicode
>>
>>And I assume in this kind of setup(from the build perspective) it would be 
>>a matter of using the unicode option as pointed out here:
>>http://g.yi.org/?f=12666#unicodesettings
>>
>>and that the vlc codebase would be a much cleaner and more consise 
>>implementation.. -probably with less needed patchings(due to future 
>>changes in wx?) and special attention toward 2 variations.
>>
>>here's an old post from the wxForums from 2 months ago:
>>http://www.solidsteel.nl/users/wxwidgets/viewtopic.php?t=3514&highlight=win9x+unicode
>>
>>
>>line 1048 of C:\cygwin\usr\win32\include\wx-2.6\wx\msw\setup0.h:
>>#ifndef wxUSE_UNICODE_MSLU
>>#define wxUSE_UNICODE_MSLU 0
>>#endif
>>(so win9x will need to specify `wxUSE_UNICODE_MSLU')
>>
>>I'm gonna drop this line in the vlc widgets.h and try that:
>>#define wxUSE_UNICODE_MSLU 1
>>
>>or maybe better would be:
>>#ifdef wxUSE_UNICODE_NT
>>#define wxUSE_UNICODE_MSLU 0
>>#elseif wxUSE_UNICODE_9x
>>#define wxUSE_UNICODE_MSLU 1
>>#endif
>>
>>or actually the best might be getting the autotools to handle a config 
>>switch:
>>...? O_O
>>
>>Here's a potential area I think:
>>Changeset [12764] by damienf:
>>I am really clueless on these type of hieroglyphics, but I think something 
>>could be pushed around there maybe like a mslu flag?
>>(..and in this scenerio I think no code would need changes, only whatever 
>>configurationing changes would pull it off properly.. and the contrib 
>>remains as is.)
>>
>>Changeset [12762] by courmisch: wx requirements
>>"Now require wx2.6 with Unicode support".. so these things can move closer 
>>to that.
>>
>>geez, I wish I had a better handle here..
>>
>>in trunk/modules/gui/wxwidgets/wxwidgets.h:
>>#define wxUSE_UNICODE 0
>>alone doesn't work I'm guessing since there's no non-unicode static lib 
>>option(not to mention a configuration that would account for it).
>>
>>Anyway, I'm going to be trying various things, but of course any direction 
>>would be quite useful I'm sure since, well, frankly, I am stabbing in the 
>>dark.
>>
>>Hopefully some of this is useful.. too bad I can't just work up a 
>>changeset, but at least I feel I've encapsulated alot of the related 
>>points and communicated what I've found. :/
>>
>>zcot
>>
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