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/* Copyright 2003 - 2016, The libsigc++ Development Team
*
* Assigned to the public domain. Use as you wish without
* restriction.
*/
#include <iostream>
#include <string>
#include <sigc++/sigc++.h>
class Something : public sigc::trackable
{
public:
Something();
protected:
void on_print(int a);
using type_signal_print = sigc::signal<void(int)>;
type_signal_print signal_print;
};
Something::Something()
{
auto connection = signal_print.connect(sigc::mem_fun(*this, &Something::on_print));
signal_print.emit(2);
// This isn't necessary - it's just to demonstrate how to disconnect:
connection.disconnect();
signal_print.emit(3); // Prove that it is no longer connected.
}
void
Something::on_print(int a)
{
std::cout << "on_print received: " << a << std::endl;
}
int
main()
{
Something something;
return 0;
}
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