• why cant i get rid of this error?

    error: no matching function for call to 'MainWindow::connect(PlayList*&, const char*, __gnu_cxx::__alloc_traits<std::allocator<Track> >::value_type*, const char*)'
    heres my code:

  • @Lorence
    From your code class Track does not derive from QObject, thus you can not connect to it:

    class Track : public QObject 

    Also the following looks strange:

    std::vector<Track> playList;

    Since you have a class called PlayList. If that is correct I suggest calling your variable trackList instead.

  • Another issue, your class Track does not have a slot called play(), there is a playSong() that I suspect you wanted to call.

    If you are using Qt 5 use the new connect syntax instead and you will reduce such errors:

    connect(ui->tab1List, &PlayList::clickedToPlay, &playList.back(), &Track::playSong);

    PS: I replaced the playList[playList.size()-1] with the std::vector::back() function call since it should do the same but the intent is clear.

  • Guys!!! sorry for the late reply, i was so busy from my school projects

    heres the error:
    error: use of deleted function 'Track::Track(const Track&)'
    { ::new(static_cast<void*>(__p)) _T1(std::forward<_Args>(__args)...); }

    heres the new code:

  • Qt Champions 2016

    you have declared your list as using non pointers.
    std::vector<Track> playList;
    So track must be copy able.
    but since its a QObject, its not allowed.
    So it must be
    std::vector<Track*> playList;

    Thats why you get Track(const Track&) error

    [edit: fixed typo -> QObject are not copyable SGaist]

  • @TheBadger
    I tried to investigate the error, and i found where it is coming from
    its from this line
    which is written before the connect() in the code

Looks like your connection to Qt Forum was lost, please wait while we try to reconnect.