CODEWITHSUNDEEP
c++c++11c++14gtkmmgtkmm3
user7214084
user7214084

Reputation:

Create a signal with Gtkmm

I am using the gtkmm library with C++, and I am trying to create a signal which allows to change current tab, but it does not work.

Actually I think the problem comes from this line:

menuit->signal_activate().connect([&bo]() {bo->next_page();});

Where:

menuit = Gtk::MenuItem
bo = Gtk::Notebook

The code compiles well, but when executing I get this line :

Segmentation fault
(program exited with code: 139)

Thank you a lot for your help !

Upvotes: 0

Views: 390

Answers (1)

rocambille
rocambille

Reputation: 15996

menuit->signal_activate().connect([&bo]() {bo->next_page();});

You're capturing bo by reference, so at the time the signal is executed, I guess the capture became a dangling reference.

Try by copy (after all, bo is a pointer):

menuit->signal_activate().connect([bo]() {bo->next_page();});

Upvotes: 1

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