58 lines
1.3 KiB
C++
58 lines
1.3 KiB
C++
// Example program for passing arguments from signal invocations to slots.
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//
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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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//[ slot_arguments_slot_defs_code_snippet
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void print_args(float x, float y)
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{
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std::cout << "The arguments are " << x << " and " << y << std::endl;
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}
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void print_sum(float x, float y)
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{
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std::cout << "The sum is " << x + y << std::endl;
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}
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void print_product(float x, float y)
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{
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std::cout << "The product is " << x * y << std::endl;
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}
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void print_difference(float x, float y)
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{
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std::cout << "The difference is " << x - y << std::endl;
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}
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void print_quotient(float x, float y)
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{
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std::cout << "The quotient is " << x / y << std::endl;
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}
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//]
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int main()
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{
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//[ slot_arguments_main_code_snippet
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boost::signals2::signal<void (float, float)> sig;
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sig.connect(&print_args);
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sig.connect(&print_sum);
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sig.connect(&print_product);
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sig.connect(&print_difference);
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sig.connect(&print_quotient);
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sig(5., 3.);
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//]
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return 0;
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}
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