simple question about lua<-->C
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- Subject: simple question about lua<-->C
- From: Guilherme <cox@...>
- Date: 2009年3月11日 18:44:53 -0300
Hi,
I am new to lua and I am trying to run a simple test. Can you guys
help me on this problem?
I compiled the lua 5.1 lib using visual C and generated the lua51.dll,
luac.exe and lua.exe
I am trying to write one application to communicate with Lua.
It's very simple and small:
#include <stdio.h>
#include "../src/lua.h"
#include "../src/lualib.h"
#include "../src/lauxlib.h"
lua_State *m_hPrivateState;
int main( void )
{
int sum, x=5, y=9;
m_hPrivateState = lua_open( );
luaL_openlibs( m_hPrivateState );
luaL_loadfile( m_hPrivateState, "teste.lua" );
/* the function name */
lua_getglobal(m_hPrivateState, "fadd");
/* the first argument */
lua_pushnumber(m_hPrivateState, x);
/* the second argument */
lua_pushnumber(m_hPrivateState, y);
/* call the function with 2
arguments, return 1 result */
lua_call( m_hPrivateState, 2, 1);
/* get the result */
sum = (int)lua_tointeger(m_hPrivateState, -1);
lua_pop(m_hPrivateState, 1);
}
the teste.lua file is:
function fadd ( x, y )
return x + y
end
when I run this program, I got the error message:
PANIC: unprotected error in call to Lua API (attempt to call a nil value)
Press any key to continue . . .
I am following a tutorial that I found on internet and it supposed to
run on lua version 5.1
Any help will be great
Thank's
Guilherme