Function ReShadeRegisterAddon

source/addon_manager.cpp:423–523

#if defined(RESHADE_API_LIBRARY_EXPORT)

bool ReShadeRegisterAddon(void *module, uint32_t api_version)
{
	// Can only register an add-on module once
	if (module == nullptr || module == g_module_handle || reshade::find_addon(module))
	{
		reshade::log::message(reshade::log::level::error, "Failed to register add-on, because it provided an invalid module handle!");
		return false;
	}

	// Check that the requested API version is supported
	if (api_version == 0 || api_version > RESHADE_API_VERSION || (api_version / 10000) != (RESHADE_API_VERSION / 10000))
	{
		reshade::log::message(reshade::log::level::error, "Failed to register add-on, because the requested API version (%u) is not supported (%u)!", api_version, static_cast<uint32_t>(RESHADE_API_VERSION));
		return false;
	}

	const std::filesystem::path path = get_module_path(static_cast<HMODULE>(module));

	reshade::addon_info info;
	info.name = path.stem().u8string();
	info.file = path.filename().u8string();
	info.handle = module;

	DWORD version_dummy, version_size = GetFileVersionInfoSizeW(path.c_str(), &version_dummy);
	std::vector<uint8_t> version_data(version_size);
	if (GetFileVersionInfoW(path.c_str(), version_dummy, version_size, version_data.data()))
	{
		WORD language = 0x0400;
		WORD codepage = 0x04b0;

		if (WORD *translation = nullptr;
			VerQueryValueA(version_data.data(), "\\VarFileInfo\\Translation", reinterpret_cast<LPVOID *>(&translation), nullptr))
			// Simply use the first translation available
			language = translation[0], codepage = translation[1];

		const auto query_file_version_info = [&version_data, language, codepage](std::string &target, const char *name) {
			char subblock[64];
			std::snprintf(subblock, std::size(subblock), "\\StringFileInfo\\%04x%04x\\%s", language, codepage, name);
			if (char *value = nullptr;
				VerQueryValueA(version_data.data(), subblock, reinterpret_cast<LPVOID *>(&value), nullptr))
				target = value;
		};

		query_file_version_info(info.name, "ProductName");
		query_file_version_info(info.author, "CompanyName");
		query_file_version_info(info.description, "FileDescription");

		if (VS_FIXEDFILEINFO *fixed_file_version_info = nullptr;
			VerQueryValueW(version_data.data(), L"\\", reinterpret_cast<LPVOID *>(&fixed_file_version_info), nullptr))
		{
			info.version = {
				HIWORD(fixed_file_version_info->dwFileVersionMS),
				LOWORD(fixed_file_version_info->dwFileVersionMS),
				HIWORD(fixed_file_version_info->dwFileVersionLS),
				LOWORD(fixed_file_version_info->dwFileVersionLS)
			};
		}
	}