Re: accessing an object in a call-back

[Murray Cumming <murrayc murrayc com>]

On Wed, 2006-05-03 at 01:24 +0200, Millerand Fabien wrote:
> Hello,
> 
> I have a problem in a callback:
> 
> Button	b_start_stop->signal_clicked().connect(sigc::mem_fun(this,&
> FenetreEnregistrement::DemarrerEnregistrement));
> 
> and in FenetreEnregistrement::DemarrerEnregistrement
> 
> anytime I try to use a function of the button, I get a core dump,
> without any warning at the compilation:

Try using gdb to get a backtrace.
And/or use valgrind's memcheck tool to identify memory management
problems.

> b_start_stop->set_label("another_label");
> 
> -->give a core dump
> 
> Can you help me?
> 
> Am I allowed to change something on the button which called the
> callback? I don't understand...

-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com
www.openismus.com