Is it possible to run a direct command in Callback?

[Apprentice]

System: Linux, Slackware64 Current
Compiler: g++
Fltk: v.1.4.0

The callback below (Fl_Button) runs the Exit function that has the command exit(0);

BtExit->callback((Fl_Callback*)Exit);

Is it possible for me to run the command exit(0); without using a function, right in this callback command? How do I do that? for example:

BtExit->callback(exit(0));

Thanks!

[lifeatt...@gmail.com]

Might try using a lambda [I've not tried it ...]  Will require C++11.

BtExit->callback( [](Fl_Widget *, void *) { exit(0); } );

[Apprentice]

Yes this works perfectly!

Thank you so much!