Re: Error trying to export class

Hmmmm,
It is very strange. I've replaced this:
=============================================================
    luaL_dofile(L,"main.lua");
    try{
        luabind::call_function<int>(L, "func", 2, 3);

    }
=============================================================
By this:
===============================================================
    try{
        luaL_dofile(L,"main.lua");
        if (lua_isstring(L, lua_gettop(L))) {
            std::cout << lua_tostring(L,lua_gettop(L)) << "\n";
            lua_pop(L, 1);
        }
     }
===============================================================
All the rest is the same (including the catch clause) and it works. But
replacind the code by the old one
luaL_dofile(L,"main.lua");
    try{
        luaL_dofile(L,"main.lua");
        luabind::call_function<int>(L, "func", 2, 3);

    }
works!!!
May visual studio block some file or DLL that causes the error?

Thanks to all
Ferran


On Fri, Dec 31, 2010 at 11:09 PM, Tony Kostanjsek <[email protected]>wrote:

> How do you Link against luabind and Lua? Static or dlls? I've only used
> static builds and there are some things you have to take care of when you
> Link dynamically. There were quite a few posts regarding this topic in the
> List. If you can Build a testcase within a Single cpp file that fails then
> others could try it easier.
>
>
>
>
> On 31.12.2010, at 21:25, Ferran Ferri <[email protected]> wrote:
>
> I'm programming in Visual C++ 2008 and luabind 0.9.1. System is Win7
> 64bits.
>
> The part that is annoying me is that this works fine:
>     luabind::module(L)
>         [
>             luabind::class_<testclass>("testclass")
>             .def(luabind::constructor<const std::string&>())
>             .def("print_string", &testclass::print_string)
>         ];
>
> And script:
> function func(first, second)
>     a = testclass('a string')
>     a:print_string()
>   return 0
> end
>
> In addition I can say that program fails after the constructor is callled.
> In script, this line works ok:
>      MyPoint = Point2D()
> (and even      MyPoint = Point2D )
> But
>     MyPoint:setXY(3,4)
> and
>     MyPoint:printXY()
> fails, enven independently called.
>
> Thanks
> Ferran
>
>
> On Fri, Dec 31, 2010 at 6:53 PM, Tony Kostanjsek < <[email protected]>
> [email protected]> wrote:
>
>> sorry, just saw those were the 2 + 3 params from the C++ call. If it isn't
>> the constructor call, maybe you are using DLLs and the build is broken. Post
>> some more details, OS, compiler, how you build.
>>
>> ------------------------------
>> *Von:* Ferran Ferri < <[email protected]>[email protected]>
>> *An:* <[email protected]>
>> [email protected]
>> *Gesendet:* Freitag, den 31. Dezember 2010, 17:48:17 Uhr
>> *Betreff:* [luabind] Error trying to export class
>>
>> Hello all, I have a question. I'm a newbie: First, this is my c++ code
>> #include <iostream>
>> #include <cstdlib>
>>
>> extern "C" {
>>  #include "lua.h"
>>  #include "lualib.h"
>>  #include "lauxlib.h"
>> }
>>
>> #include "luabind/luabind.hpp"
>>
>> using namespace std;
>>
>> class Point2D{
>> int _x,_y;
>> public:
>> Point2D():_x(0),_y(0){}
>> void setXYPoint(int x, int y){_x = x; _y = y;}
>> void printPoint(){std::cout << "X = "<<_x<<" Y = "<<_y<<"\n";}
>> void publishAPI(const lua_State* L){}
>> };
>>
>>
>> int main(){
>>
>> lua_State *L = lua_open();
>>
>> // Connect LuaBind to this lua state
>> luabind::open(L);
>> luaL_openlibs(L);
>> luabind::module(L)[
>> luabind::class_<Point2D>("point2d")
>> .def(luabind::constructor<>())
>> .def("print",&Point2D::printPoint)
>> .def("setXY",&Point2D::setXYPoint)
>> ];
>>
>> // Define a lua function that we can call
>> luaL_dofile(L,"main.lua");
>> try{
>> std::cout << "Result: "
>> << luabind::call_function<int>(L, "func", 2, 3)
>> << endl;
>> lua_close(L);
>> }
>> catch(const std::exception& e){
>> std::cout << e.what() << std::endl;
>> }
>> return EXIT_SUCCESS;
>>
>> }
>>
>> And this is my lua script
>>
>> function func(first, second)
>>   MyPoint = point2d
>>    MyPoint:setXY(3,4)
>>    MyPoint:print()
>>   return first + second
>> end
>>
>> The only result I always get is "lua runtime exception". But the program
>> compiles fine and it seems legal. Could you help me please? This is very
>> similar to others samples.
>>
>> Another question is: how do I get a more detailed error message? I always
>> get "lua runtime exception" and I need a more comprehensive error
>>
>> Thanks in advance.
>> Ferran
>>
>>
>>
>>
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>>
>
> ------------------------------------------------------------------------------
> Learn how Oracle Real Application Clusters (RAC) One Node allows customers
> to consolidate database storage, standardize their database environment,
> and,
> should the need arise, upgrade to a full multi-node Oracle RAC database
> without downtime or disruption
> http://p.sf.net/sfu/oracle-sfdevnl
>
> _______________________________________________
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>
>
>
> ------------------------------------------------------------------------------
> Learn how Oracle Real Application Clusters (RAC) One Node allows customers
> to consolidate database storage, standardize their database environment,
> and,
> should the need arise, upgrade to a full multi-node Oracle RAC database
> without downtime or disruption
> http://p.sf.net/sfu/oracle-sfdevnl
> _______________________________________________
> luabind-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/luabind-user
>
>

------------------------------------------------------------------------------
Learn how Oracle Real Application Clusters (RAC) One Node allows customers
to consolidate database storage, standardize their database environment, and, 
should the need arise, upgrade to a full multi-node Oracle RAC database 
without downtime or disruption
http://p.sf.net/sfu/oracle-sfdevnl

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