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