Hi Peter.

 PS> Is there any way to multithread a C++ Class member-function? I'm using 
 PS> VisualAge C++ 3.0, and I am trying to execute a member-function in a
 PS> separate  thread. But the compiler says "error EDC3167: The
 PS> "_Optlink" qualifier cannot  be applied to
"void()".". If I however
 PS> move the function out of the class that  works, but instead I can't
 PS> pass *this on to it.

  You can't start thread in class method -- class method has *this* as
first parameter. But you can start thread, and then call method, using
known pointer.

void APIENTRY ThreadBody( ulong p )
{
  SomeClass* t = (SomeClass*)p;
  p->SomeMethod();
};

SomeClass x;
DosStartThread(&tid,ThreadBody,(ulong)&x,0,32768);

*or* 

(typed on-the-fly!)

class Thread
{
public:
  static APIENTRY Wrapper(ulong p)
  {
    Thread* t = (Thread*)p;
    t->Body();
    DosExit(0,0);
  };
  
  void Run()
  {
    DosCreateThread(&tid,&Wrapper,(ulong)this,0,32768);
  }

protected:
  virtual void Body() = 0;

  ulong tid;
};

and then:

class Typer : public Thread
{
  void Body()
  {  
    while(1) puts("still alive");
  };
};

Typer a; a.Run();

// add error checking by taste.

bye.   [Team OS/2]
dozen
SPb,Russia

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