Re: Error trying to export class

"MyPoint = point2d" should probably be "MyPoint = point2d()" if this is the 
original lua script.
You should get a descriptive error if you call a missing static function on a 
class, I just tried that. Maybe something else is wrong?What types exactly are 
"first + second" that you try to add in the last line of the function?


________________________________
Von: Ferran Ferri <[email protected]>
An: [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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