タイトル プレゼンス変更の処理

state.titlePresenceChangedHandlerToken = XblPresenceAddTitlePresenceChangedHandler(
    xboxLiveContext,
    [](void* context, uint64_t xuid, uint32_t titleId, XblPresenceTitleState titleState)
    {
        UNREFERENCED_PARAMETER(context);
        LogToFile("Title presence change notification received:");
        LogToFile("Xuid = %llu, titleId = %u, titleState = %u",
            static_cast<unsigned long long>(xuid),
            titleId,
            static_cast<uint32_t>(titleState));
    },
    nullptr
);

if (state.titlePresenceChangedHandlerToken == 0)
{
    // The handler wasn't registered.
}

uint64_t xuids[]{ 123 };
uint32_t titleIds[]{ otherTitleId };

HRESULT hr = XblPresenceTrackUsers(
    xboxLiveContext,
    xuids,
    _countof(xuids)
);

if (SUCCEEDED(hr))
{
    hr = XblPresenceTrackAdditionalTitles(
        xboxLiveContext,
        titleIds,
        _countof(titleIds)
    );
}

HRESULT hr = XblPresenceStopTrackingAdditionalTitles(
    xboxLiveContext,
    titleIds,
    _countof(titleIds)
);

HRESULT hrUsers = XblPresenceStopTrackingUsers(
    xboxLiveContext,
    xuids,
    _countof(xuids)
);

HRESULT hr = XblPresenceRemoveTitlePresenceChangedHandler(
    xboxLiveContext,
    state.titlePresenceChangedHandlerToken
);

if (SUCCEEDED(hr))
{
    state.titlePresenceChangedHandlerToken = 0;
}