void XTaskQueueSetCurrentProcessTaskQueue(  
         XTaskQueueHandle queue  
)  

void UsingProcessTaskQueue()
{
    XTaskQueueHandle queue = nullptr;
    XTaskQueueGetCurrentProcessTaskQueue(&queue);

    auto callback = [](void*, bool)
    {
        printf("Work callback invoked.\r\n");
    };

    HRESULT hr = XTaskQueueSubmitCallback(
        queue, XTaskQueuePort::Work, 
        nullptr, callback);

    if (FAILED(hr))
    {
        printf("Failed to submit callback: %x\r\n", hr);
        return;
    }

    // You can replace the process task queue.
    hr = XTaskQueueCreate(
        XTaskQueueDispatchMode::Manual, 
        XTaskQueueDispatchMode::Manual, 
        &queue);

    if (FAILED(hr))
    {
        printf("Failed to create new task queue: %x\r\n", hr);
        return;
    }
}