| // Beginner hello world example for Boost.Signals2 |
| // Copyright Douglas Gregor 2001-2004. |
| // Copyright Frank Mori Hess 2009. |
| // |
| // Use, modification and |
| // distribution is subject to the Boost Software License, Version |
| // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| // http://www.boost.org/LICENSE_1_0.txt) |
| // For more information, see http://www.boost.org |
| |
| #include <iostream> |
| #include <boost/signals2/signal.hpp> |
| |
| //[ hello_world_def_code_snippet |
| struct HelloWorld |
| { |
| void operator()() const |
| { |
| std::cout << "Hello, World!" << std::endl; |
| } |
| }; |
| //] |
| |
| int main() |
| { |
| //[ hello_world_single_code_snippet |
| // Signal with no arguments and a void return value |
| boost::signals2::signal<void ()> sig; |
| |
| // Connect a HelloWorld slot |
| HelloWorld hello; |
| sig.connect(hello); |
| |
| // Call all of the slots |
| sig(); |
| //] |
| |
| return 0; |
| }; |