Compilation error g++

Question

I tried to compile this example from https://github.com/augcampos/asterisk-cpp/wiki/Examples but I get this error:

root@debian:~# g++ TesteCpp.cpp -o tt -lasteriskcpp
TesteCpp.cpp: In function ‘int main()’:
TesteCpp.cpp:13:39: error: invalid conversion from ‘void (*)(asteriskcpp::ManagerEvent*)’ to ‘asteriskcpp::onManagerEventCallback_t {aka void (*)(const asteriskcpp::ManagerEvent&)}’ [-fpermissive]
In file included from TesteCpp.cpp:4:0:
/usr/local/include/asteriskcpp/manager/ManagerConnection.h:49:14: error:   initializing argument 1 of ‘void asteriskcpp::ManagerConnection::addEventCallback(asteriskcpp::onManagerEventCallback_t)’ [-fpermissive]

How to fix it?

TesteCpp.cpp:

//TesteCpp.cpp
#include <iostream>
#include "asteriskcpp/utils/LogHandler.h"
#include "asteriskcpp/manager/ManagerConnection.h"

using namespace asteriskcpp;
void eventCallback(ManagerEvent* me) {
    std::cout << std::endl << "TEST:EVENT" << me->toLog() << std::endl;
} 

int main() {
    ManagerConnection mc;
    mc.addEventCallback(&eventCallback); // add event listener
    if (mc.connect("192.168.1.6")) {
        if (mc.login("admin", "zzz")) {
            mc.logoff();
        }
    }
    mc.disconnect();
    return (0);
 }

could you provide more code please? At least TesteCpp.cpp (around line 13)? — Jan Vorcak
– Jan Vorcak, Commented Nov 28, 2013 at 15:57
Did you read the error message? You're passing one type of function pointer where a different type is expected. — Mike Seymour
– Mike Seymour, Commented Nov 28, 2013 at 16:18

john · Accepted Answer · 2013-11-28 16:02:32Z

5

Based on a quick scan of the code

void eventCallback(ManagerEvent* me) {
    std::cout << std::endl << "TEST:EVENT" << me->toLog() << std::endl;
}

should be

void eventCallback(const ManagerEvent& me) {
    std::cout << std::endl << "TEST:EVENT" << me.toLog() << std::endl;
}

answered Nov 28, 2013 at 16:02

john

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