Re: Returning data from C functions called using "loadlib".

[William Roper <lacutis@...>]

The return is indicating the number of variables being returned by the
function, not the value being returned by the function.

Ryan.


On Wed, 1 Sep 2004 22:05:27 +0100 (BST), Aaron Newell
<add_aaron_2_x@yahoo.com> wrote:
> Thanks a lot that works great!
> I've got two more questions though:
> 1) why do you "return 1"? As you're obviously not
> returning one.
> 2) Can you do a similar thing with arrays?
> 
> Thanks, again!
> Aaron
> 
> > I'm quite sure that C code is wrong. You need to
> push a onto the > > > stack,
> > and
> > then return how many results your function is
> returning. So the
> > function
> > would be something like:
> >
> > static int functionFromCLibrary(lua_State* L)  {
> >    int a = (int)lua_tonumber(L, -1);
> >    printf("cfunction: %d\n", a);
> >    a = a + 1;
> >    printf("cfunction now: %d\n", a);
> >    lua_settop(L, 0);
> >    lua_pushnumber(L, a);
> >    return 1;
> > }
> >
> >
> > Greetings,
> > Ignacio Burgueño
> 
>                 
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