Function GetModuleVersion

BG3Updater/Utils.cpp:83–113

}

std::optional<VersionNumber> GetModuleVersion(HMODULE hModule)
{
    if (hModule == NULL) {
        return {};
    }

    auto hResource = FindResource(hModule, MAKEINTRESOURCE(VS_VERSION_INFO), RT_VERSION);
    if (hResource == NULL) return {};
    auto dwSize = SizeofResource(hModule, hResource);
    auto hData = LoadResource(hModule, hResource);
    if (hData == NULL) return {};
    auto pRes = LockResource(hData);
    if (pRes == NULL) return {};

    auto pResCopy = LocalAlloc(LMEM_FIXED, dwSize);
    CopyMemory(pResCopy, pRes, dwSize);

    UINT verLength;
    VS_FIXEDFILEINFO* fixedFileInfo;
    if (VerQueryValue(pResCopy, L"\\", (LPVOID*)&fixedFileInfo, &verLength) != TRUE) return {};

    VersionNumber version(
        HIWORD(fixedFileInfo->dwFileVersionMS),
        LOWORD(fixedFileInfo->dwFileVersionMS),
        HIWORD(fixedFileInfo->dwFileVersionLS),
        LOWORD(fixedFileInfo->dwFileVersionLS));

    LocalFree(pResCopy);
    FreeResource(hData);
    return version;
}

std::optional<VersionNumber> GetGameVersion()
{