On 2012-04-06 14:39:10 +0200, [email protected] wrote: > > > On Fri, 6 Apr 2012, Leonardo M. Ramé wrote: > > >I have a similar problem to this: > > > >http://www.lazarus.freepascal.org/index.php?topic=10571.0 > > > >My main program launches a thread, that loads a shared library, then > >execute a function who receives as a parameter a pointer to a callback > >function and an instance of the caller, as this: > > > >procedure TMythread.execute; > >begin > > ... > > // external function > > runcode(@MyCallBack, @Self); > > ... > >end; > > > >procedure MyCallback(const Result: PAnsiChar; const ACaller: pointer); > >cdecl; > >var > > lCaller: TMythread; > >begin > > // the parameter ACaller is used because callbacks can't be of type > > // procedure of object. > > lCaller := TMyThread(ACaller); > > lCaller.TestVar := Result; // <--- Ok. > > lCaller.ListOfThings.Add; // <--- SIGSEGV > > IMHO the problem is not in threads. > > You cannot pass objects to libraries or vice versa. > The VMTs will differ. > > Michael.
But, I'm passing the object as a pointer that is received as (void *) and returned back to the callback as a parameter, the library doesn't touch it. Even in this case I can't pass an object?. -- Leonardo M. Ramé http://leonardorame.blogspot.com -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
