Connecting idle-signal aborts my program

["Daniel Kraft" <d daniel-kraft net>]

Hi!

I want to use the Glib::signal_idle() signal in my program, but when I try to
connect my slot (a sigc::ptr_fun) to it, the program is aborted. The stack dump
contains no stackframes at all.

The minimal program which produces the error is very simple:




#include <gtkmm/main.h>
#include <gtkmm/window.h>

#include <iostream>
using namespace std;

bool idle()
{
 cerr << "Idle!" << endl;
 return true;
}

int main(int argc, char** argv)
{
 Gtk::Main kit(argc, argv);

 Gtk::Window w;
 Glib::signal_idle().connect(sigc::ptr_fun(&idle));
 kit.run(w);

 return 0;
}




What is my problem? Can I connect to that signal only in special situations,
e.g. when a component is realized or in a component's constructor?

Thank you very much!
Yours,
Daniel Kraft