Re: [Wxlua-users] Re: wxLua works as module, require"wx"

[John L. <jla...@gm...>]

On 5/15/06, Damien Fagnou <dam...@mo...> wrote:
>
> I try to send this to the list but it doesn`t go through ..

Humm, that's strange.

> -------------------------------------------------------------------------=
--------------------------
> this is great news !!!!
>
>  our pipeline is strongly based on lua and I can`t wait to put more wxLua=
 in action !!
>
> > A sample program called luamodule.wx.lua in that dir shows it working
> > by simply creating a wxFrame. Test it from the
> > wxLua/apps/luamodule/src dir using
> > $../../../bin/lua luamodule.wx.lua
>
>  this worked great , compile and run .
>
>  but if I try
>         lua luamodule.wx.lua
>
>  I get an error of type :
>         libwx_gtk2_wxlua-2.6.so: undefined symbol: wxLua_lua_getnewthread=
handler
>
>  we have the standard lua 5.1 distribution installed , what is exactly th=
e difference beetwen lua 5.1
>  and lua include the wxLua distribution ?
>
>  is it only the function enable by the  WXLUA_LUA_NEWTHREAD flag ?

We added some functions in lstate.c to track when a coroutine is
created, there's really nothing to them. This is unfortunately tricky
to "fix". In wxLua itself we want to have WXLUA_LUA_NEWTHREAD defined
so that coroutines will work, but for the luamodule we can't have it
defined for people who want to use a stock lua executable which means
that module/wxlua has to be compiled without it.

1) We could add a compiler option or new #define to NOT define
WXLUA_LUA_NEWTHREAD for people who want to use the module. Sounds
strange, but I think it should be on by default, hence the added
define undoes the default define.

2) Use the lua registry? Does it get copied for coroutine created
lua_States? If so then we don't need this hook at all. I had tried to
stick the wxLuaStateData into lua itself as a global variable, but
somehow it wasn't in the coroutine state, though other bits were.

The bottom line is that we need to associate each lua_State with our
wxLuaStateRefData and so things break if lua_States get created behind
our back as they do for coroutines.


For now, just edit the top of wxLua/modules/wxlua/src/wxlstate.cpp and
add this to undef it and that way it won't get compiled in.

#ifdef WXLUA_LUA_NEWTHREAD
#undef WXLUA_LUA_NEWTHREAD
#endif

>  again thank you for your great work on bringing us wxLua !!!!

You're welcome, it's a work in progress...
    John Labenski