Events in C++

Question

I\'m not sure how to look for this online... I think they might be called something different in C++

I want to have a simple event system, somthing like

Answer 1

I use libsigc++. It's native for gtkmm.

A simple example losely adapted from the tutorial:

#include 
#include 

using namespace std;

class AlienDetector {
public:
        void run ();
        sigc::signal signal_detected;
};

void warn_people () {
        cout << "There are aliens in the carpark!" << endl;
}

void AlienDetector::run () {
        signal_detected.emit ();
}

int main () {
        AlienDetector mydetector;
        mydetector.signal_detected.connect (sigc::ptr_fun (warn_people));
        mydetector.run ();
}

It also provides a mechanism to connect member-functions of specific objects to signals using sigc::mem_fun instead of sigc::ptr_fun:

sigc::mem_fun (someobject, &SomeClass::some_method);

This pretty much provides anything that is possible with GLib-signals.