03-member-arguments/main.cpp

An example of how to connect a member function with arguments to a KDBindings::Signal.

The output of this example is:

Bob received: Have a nice day!
Alice received: Thank you!

/*
  This file is part of KDBindings.
 
  SPDX-FileCopyrightText: 2021 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
  Author: Sean Harmer <sean.harmer@kdab.com>
 
  SPDX-License-Identifier: MIT
 
  Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
 
#include <kdbindings/signal.h>
 
#include <iostream>
#include <string>
 
using namespace KDBindings;
 
class Person
{
public:
    Person(std::string const &name)
        : m_name(name)
    {
    }
 
    Signal<std::string const &> speak;
 
    void listen(std::string const &message)
    {
        std::cout << m_name << " received: " << message << std::endl;
    }
 
private:
    std::string m_name;
};
 
int main()
{
    Person alice("Alice");
    Person bob("Bob");
 
    auto connection1 = alice.speak.connect(&Person::listen, &bob);
    auto connection2 = bob.speak.connect(&Person::listen, &alice);
 
    alice.speak.emit("Have a nice day!");
    bob.speak.emit("Thank you!");
 
    connection1.disconnect();
    connection2.disconnect();
 
    return 0;
}