class JobThread1 : public CallbackThread
{
public: //these members may be added into thread queue and must not be called directly
    void Job11();
    void Job12(const String &);
private: //all the realization details are private
    //...
};

class class JobThread2 : public CallbackThread
{
public: //these members may be added into thread queue and must not be called directly
    void Job21(const String &);
private: //all the realization details are private
    //...
};

CONSOLE_APP_MAIN
{
    JobThread1 jobs1;
    JobThread2 jobs2;

    for (int i=0; i<10; ++i)
    {
        jobs1.Add(&JobThread1::Job11);
        jobs1.Add(&JobThread1::Job12, FormatInt(i));
        jobs2.Add(&JobThread2::Job21, FormatIntHex(i));
    }
};