running C++ function as THREADCONTROL thread

Hi, I looked at the pingpong code and found how a thread is created and activated using THREADCONTROL system call. It uses C function pointers and typecasts them to L4_Word_t which are then passed to threadcontrol system call to run this function as thread. I want to use a C++ function as the thread. But C++ member function pointer seem not to be as simple as C function pointers. Their size changes as well, with the compiler or compiler-options, because of inheritance. Is their any example code that does this? Thanks. -- Jayesh