(C++) Boost signal example 3: emitting two arguments and reading a result

 

This Boost signal example shows how to emit this.

 

• Download the Qt Creator project 'CppBoostSignalExample3' (zip)

 

 

 

 

 

Technical facts

 

Application type(s)

• Desktop application

Operating system(s) or programming environment(s)

• Lubuntu 12.10 (quantal)

IDE(s):

• Qt Creator 2.5.2

Project type:

• Console application

C++ standard:

• C++11

Compiler(s):

• G++ 4.7.2

Libraries used:

• STL: GNU ISO C++ Library, version 4.7.2

 

 

 

 

 

Qt project file: CppBoostSignalExample3.pro

 

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TEMPLATE = app CONFIG += console CONFIG -= qt SOURCES += main.cpp QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra -Weffc++ -Werror

 

 

 

 

 

main.cpp

 

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#include <cassert> #include <boost/function.hpp> struct MyClass {   MyClass(const int x = 0) : m_x(x) {}   int Plus( const int x) const { return m_x + x; }   int Minus(const int x) const { return m_x - x; }   int m_x; }; int main() {   typedef boost::function<int(const MyClass*,int)> Function;   MyClass c;   Function f1 = &MyClass::Plus;   Function f2 = &MyClass::Minus;   assert( f1(&c,1000) ==  1000 );   assert( f2(&c,1000) == -1000 ); }