On Wed, 14 Jan 2009 19:02:13 -0700 "Phillip Neiswanger" <[email protected]> wrote: > > Hi, > > At this end of this message is a simple test program. Note the > connect() call in the Application constructor. If I move the > connect() out of that constructor and into the MainWindow constructor > like so: > > MainWindow::MainWindow() > { > Application::instance()-> > signal_a(). > connect(sigc::mem_fun(*this, &MainWindow::on_a)); > } > > I get a core dump in the connect() call. The back trace looks like > this:
[snip] You have a number of issues. First Gtk::Main is not intended to be derived from (although I doubt that is the direct cause of your failure). Secondly, MainWindow is a member of the class you have attempted to derive from Gtk::Main, so attempts to access other members of your derived class in the MainWindow constructor gives rise to undefined behaviour (your derived object does not exist at that point - probably though your dynamic cast returned a null pointer, which you also did not check for). Thirdly, you are connecting to a temporary signal object (the return type is wrong). Are you trying to write it as a java program? There are some java bindings if you want to try them out. Chris _______________________________________________ gtkmm-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gtkmm-list
