處理裝置線上狀態變更

uint64_t xuid{ 123 };

HRESULT hr = XblPresenceSubscribeToDevicePresenceChange(
    xboxLiveContext,
    xuid,
    &state.devicePresenceChangeSubscription
);

HRESULT hr = XblPresenceUnsubscribeFromDevicePresenceChange(
    xboxLiveContext,
    state.devicePresenceChangeSubscription
);

state.devicePresenceChangeSubscription = nullptr;

state.devicePresenceChangedHandlerToken = XblPresenceAddDevicePresenceChangedHandler(
    xboxLiveContext,
    [](void* context, uint64_t xuid, XblPresenceDeviceType deviceType, bool isUserLoggedOnDevice)
    {
        UNREFERENCED_PARAMETER(context);
        LogToFile("Device presence change notification received:");
        LogToFile("Xuid = %u, deviceType = %u, isUserLoggedOnDevice = %u", xuid, deviceType, isUserLoggedOnDevice);
    },
    nullptr
);

HRESULT hr = XblPresenceRemoveDevicePresenceChangedHandler(
    xboxLiveContext,
    state.devicePresenceChangedHandlerToken
);

state.devicePresenceChangedHandlerToken = 0;