[Wxlua-users] namespace and static binding

[klaas.holwerda <kho...@xs...>]

Hi John,

I got something working now, but still do not understand why i can not 
debug into lua code itself.
The problem with my script was, that
wx.a2dLuaWP:Message("blah blah") should be 
wxart2d.a2dLuaWP:Message("blah blah")
Which has to do with the namespace. What is lua doing with the namespace 
in front? Is it a function too?

But now the question is, how does lua feedback to me what is wrong with 
my script?
Can you tell me what i should do to get some kind of feedback when my 
script is not right?
I did define LuaHandler derived from wxLuaHandler, but nothing in there 
is called, i expected DisplayError() would do the trick, but it seems 
more is needed.

On the static bindings i found the next.
If i define in MyApp as i explained the binding:

class MyApp
{
   static wxart2d_binding m_wxart2dluab;
}

And initialize the static instance like this:
 
wxart2d_binding MyApp::m_wxart2dluab;

BUT NOT call m_binding.GetBindingList()->Append(&m_binding);
Suddenly the next two become active,  i can but a break point on the 
last, and it stops.

class wxart2d_BindingInit
{
public:
    wxart2d_BindingInit()
    {
        m_binding.GetBindingList()->Append(&m_binding);
    }
    wxart2d_Binding m_binding;
};

wxart2d_BindingInit s_wxart2d_BindingInit;

i conclude from this, that linking somehow only includes the 
classes/libraries which are really used in the code/main program/exe. If 
not used from there, it is not linked in and the static 
wxart2d_BindingInit is also not called. And since my bindings for 
wxArt2D are in a seperate library called luawraps,  my main program did 
not contain anything from  that.
I think this in fact makes sence, why would one link anything from a 
library which is not used.
(well it only looks like it is not used, since it is only used from 
scripts )

So why is the initialization order not a problem in this case? Just 
Luck, they are initialized in the right order.
But as soon if i take class wxart2d_BindingInit from my luawraps library 
and but it into my  program , it is wrong again. All static stuff in the 
program is done first and next what is in the libraries, and it should 
be the other way around.

I do not see the solution yet, but at least the problem is more clear :-)

Regards,

Klaas