Как установить (узнать) приоритет потока

{
        HANDLE threadHandle = GetCurrentThread();
        if (!SetThreadPriority(threadHandle, THREAD_PRIORITY_HIGHEST))
                RET_ERR("SetThreadPriority");

        int priority = GetThreadPriority(threadHandle);
        if (priority == THREAD_PRIORITY_ERROR_RETURN)
                RET_ERR("GetThreadPriority");
        switch (priority)
        {
        case THREAD_PRIORITY_ABOVE_NORMAL:
                ADD_STR("THREAD_PRIORITY_ABOVE_NORMAL\r\n");
                        break;
        case THREAD_PRIORITY_BELOW_NORMAL:
                ADD_STR("THREAD_PRIORITY_BELOW_NORMAL\r\n");
                        break;
        case THREAD_PRIORITY_HIGHEST:
                ADD_STR("THREAD_PRIORITY_HIGHEST\r\n");
                        break;
        case THREAD_PRIORITY_IDLE:
                ADD_STR("THREAD_PRIORITY_IDLE\r\n");
                        break;
        case THREAD_PRIORITY_LOWEST:
                ADD_STR("THREAD_PRIORITY_LOWEST\r\n");
                        break;
        case THREAD_PRIORITY_NORMAL:
                ADD_STR("THREAD_PRIORITY_NORMAL\r\n");
                        break;
        case THREAD_PRIORITY_TIME_CRITICAL:
                ADD_STR("THREAD_PRIORITY_TIME_CRITICAL\r\n");
                        break;
        default:
                ADD_STR("Unknown\r\n");
        }
        return result_buffer;
}