Some problems about loading c library

["suluyu" <suluyu@...>]

My project  needs to call c function from a dll in lua script. I try to write a sample with C++ builder and Lua5.1.3, but I come up against some problems.

 

The c library's name is "dllforlua.dll", the codes are:

 

---c library begin--------

  static int lua_msgbox(lua_State* L)
 {
    const char* message = luaL_checkstring(L, 1);
    const char* caption = luaL_optstring(L, 2, "");
    int result = MessageBox(NULL, message, caption, MB_YESNO);
    lua_pushnumber(L, result);

 

    return 1;
 }

 

 static const  luaL_Reg mylib[] =
 {
     {"msgbox", lua_msgbox},
     {NULL, NULL}
 };

 

 int __declspec(dllexport) luaopen_dllforlua(lua_State* L)
{
     //lua_register(L, "msgbox",  lua_msgbox);
     luaL_register(L, "dllforlua", mylib);
     return 1;
 }

---c library end----------------

 

 

The lua script is:

  dllforlua = package.loadlib("dllforlua.dll", "_luaopen_dllforlua")
  dllforlua()
  msgbox("Hey, it worked!", "Lua Message Box") 

 

If use the function "lua_register", the lua script executed successfully.

But if use the function "luaL_register", exectued unsuccessfully,the error message is: "name conflict for module 'dllforlua' ".

If I use require in lua script, the lua script fail to execute also.

 

Could someone give me any advices?

Thanks very much!

 

 

---

suluyu

2008-06-23