[gtkmm] Xlib: unexpected async reply (sequence 0x2fa3)!

[Rogério Samuel de Moura Martins <rsmm netu unisinos br>]

Why when I execute two threads one with call:

   TextBuffer::iterator itor = OutputTextView->get_buffer()->end();
   OutputTextView->scroll_to(itor);

and the other with:

   queue_draw();

I receive the message:

Xlib: unexpected async reply (sequence 0x2fa3)!

Thanks!!!