处理社交关系更改

state.socialRelationshipChangedHandlerToken = XblSocialAddSocialRelationshipChangedHandler(
    xboxLiveContext,
    [](const XblSocialRelationshipChangeEventArgs* args, void* context)
    {
        UNREFERENCED_PARAMETER(context);
        LogToFile("Social relationship changed:");
        std::stringstream ss;
        for (size_t i = 0; i < args->xboxUserIdsCount; ++i)
        {
            if (i > 0) 
            {
                ss << ", ";
            }
            ss << args->xboxUserIds[i];
        }
        LogToFile("socialNotification = %u, affectedXuids = %s", args->socialNotification, ss.str().data());
    },
    nullptr
);

HRESULT hr = XblSocialRemoveSocialRelationshipChangedHandler(xboxLiveContext, state.socialRelationshipChangedHandlerToken);
state.socialRelationshipChangedHandlerToken = 0;

XblFunctionContext friendRequestCountToken{ 0 };
HRESULT hr = XblSocialAddFriendRequestCountChangedHandler(
    xboxLiveContext,
    [](const XblSocialFriendRequestCountChangedEventArgs* args, void* context)
    {
        UNREFERENCED_PARAMETER(context);
        // args is valid only during the callback.
        LogToFile("Incoming friend requests: %zu", args->incomingFriendRequestCount);
    },
    nullptr,
    &friendRequestCountToken
);

if (SUCCEEDED(hr))
{
    // Keep the token until you no longer need notifications.
    state.friendRequestCountToken = friendRequestCountToken;
}

if (state.friendRequestCountToken != 0)
{
    HRESULT hr = XblSocialRemoveFriendRequestCountChangedHandler(xboxLiveContext, state.friendRequestCountToken);
    if (SUCCEEDED(hr))
    {
        state.friendRequestCountToken = 0;
    }
}