JdBP>   class Thread {
 JdBP>   protected:
 JdBP>        virtual void main ( void ) = 0 ;
 JdBP>        void begin ( unsigned long ) ;
 JdBP>   } ;

Thank you for your answer. I didn't follow your answer exactly, but I got
the idea from it. I just created a dummy-function run() which calls the
real thread-function. I can't see why I didn't think of that myself.

I already got it to work by making the function which had to be started as
a thread a friend-function, and passing the this-pointer to it. But this
way the thread-function isn't really private anymore ( it isn't part of the
class, so it can be called by any function ) and I have to specify the
this-pointer everytime I access one of the class-members.

Now the only problem left is that in the thread-function, I have some parts
which are repeated often, so they would better fit in a function. But since
I would have to use some private members in those functions, I would have
to make them class members ( or friends ). I don't want that if possible,
since those functions don't really belong to the class, only to the
thread-function.
But I don't think there is a good solution for this ( except passing the
needed values to the function, but then I get so many parameters that it
isn't really worth the trouble anymore ).

Regards, Ruud 

--- timEd/2 1.00