#define WIN32_LEAN_AND_MEAN

#include "Windows.h"

#ifdef _WIN64

#define DLL_NAME "steam_api64.dll"

#else

#define DLL_NAME "steam_api.dll"

#endif

extern "C" __declspec( dllexport ) void* __cdecl CreateInterface( const char *pName, int *pReturnCode )

{

using fn_create_interface_t = void* (__cdecl *)(const char *);

auto steam_api = LoadLibraryA(DLL_NAME);

if (!steam_api) {

if (pReturnCode) *pReturnCode = 1; // IFACE_FAILED

return nullptr;

}

auto create_interface = (fn_create_interface_t)GetProcAddress(steam_api, "SteamInternal_CreateInterface");

// https://github.com/ValveSoftware/source-sdk-2013/blob/57a8b644af418c691f1fba45791019cf2367dedd/src/public/tier1/interface.h#L156-L160

if (!create_interface) {

if (pReturnCode) *pReturnCode = 1; // IFACE_FAILED

return nullptr;

}

auto ptr = create_interface(pName);

if (pReturnCode) {

if (ptr) {

*pReturnCode = 0; // IFACE_OK

} else {

*pReturnCode = 1; // IFACE_FAILED

}

}

return ptr;

}