[ZeroBrane Studio] Call arbitrary Windows DLL Function
- From: "Steve Russell" <steve.russell@xxxxxxxxxxxxxxxxxxxxx>
- To: <zerobrane@xxxxxxxxxxxxx>
- Date: Wed, 1 Oct 2014 11:56:41 +0100
Hi,
Does anybody know if it is possible to call a function in any system DLL in
Windows/Lua 5.2/ZBS?
I would like to call 3rd party and system functions. Ideally I'd call the
DLL functions from Lua directly, but I'm also considering writing a proxy
DLL for Lua to load and this would then load the 3rd party DLL and interact
with the functions contained therein.
I started by creating a Win32 DLL in VS2010 but Lua command line and ZBS
0.80 hang/crash during the 'require("LuaProxy")', here's the C code:
// LuaProxy.cpp : Defines the exported functions for the DLL application.
//
#include "stdafx.h"
#include <iostream>
// LuaProxy.cpp : Defines the exported functions for the DLL application.
//
#include <lua.hpp>
extern "C"
{
static int funval = 10;
static int function_1(lua_State* l)
{
std::cout << "[DLL] Function 1 is very funny." << std::endl;
std::cout << "[DLL] It's fun value is: " << funval << std::endl;
lua_pushnumber(l, funval);
return 1;
}
static int function_2(lua_State* l)
{
std::cout << "[DLL] Function 2 is twice as funny!" << std::endl;
std::cout << "[DLL] It's fun value is: " << 2*funval << std::endl;
lua_pushnumber(l, 2*funval);
return 1;
}
/*
* Registering functions
*/
static const struct luaL_Reg cfunctions[] = {
{"fun1", function_1},
{"fun2", function_2},
{NULL, NULL}
};
int __declspec(dllexport) luaopen_LuaProxy(lua_State* l)
{
// luaL_newlibtable(l, cfunctions);
// luaL_setfuncs(l, cfunctions, 0);
luaL_openlib(l, "lp", cfunctions, 0);
std::cout << "fun1(), fun2()" << std::endl;
return 1;
}
} // end extern "C"
Cheers,
Steve
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