C# luainterface luanet踩坑记录

// C# 调用dll 传递c回调函数模板格式
// LuaInterface.LuaDLL;

using LuaInterface;

public partial class xxx 
{
    //... ...
    
    //C#默认情况下委托都是stdcall的调用方式，但可以通过UnmanagedFunctionPointer特性来修改
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int _c_Function( IntPtr luaStata);

[DllImport("lua51.dll", CallingConvention = CallingConvention.Cdecl)]
public static extern void lua_pushcclosure (IntPtr L , [ MarshalAs(UnmanagedType.FunctionPtr)] _c_Function fn, int n=0);

public _c_Function fucx;

public int CallBack(IntPtr L)
{
    LuaDLL.lua_settop(Lua,0);
    LuaDLL.lua_getglobal( Lua, "__debug_string");            
    textEditorControl2.Text= LuaDLL.lua_tostring(Lua, -1);        
    LuaDLL.lua_pop(Lua 1);
    return 0;
}

// ... ... 
public void do()
{
//此处必用如下new形式生成堆对象,否则运行报错
fucx=new _c_Function( CallBack) ;
lua_pushcclosure( Lua,  fucx   );
LuaDLL.lua_setglobal( Lua , "CallBack");
}

}