I recently successfully ported my gtkmm application from gtkmm-2.4 to gtkmm-3.0. After successfully creating a gtkmm-3.0 compatible version of my application, I decided it would be good idea to modify my gtkmm-2.4 compatible version to match the gtkmm-3.0 version as closely as possible. This would obviously make the parallel maintenance of the two versions easier. I was pretty successful in doing this, except for one thing. While my modified gtkmm-2.4 version does compile and run successfully, upon exit it throws a Segmentation Fault. I believe this problem has something to do with the differences in the usage of Gtk::Adjustment between gtkmm-2.4 and gtkmm-3.0. In “upgrading” my gtkmm-2.4 version, I tried to mimic as closely as possible the gtkmm-3.0 usage of Gtk::Adjustment. In doing so I changed my declaration statement for my Gtk::Adjustment variables from:
to Glib::RefPtr<Gtk::Adjustment> hadjustment, vadjustment; // gtkmm-3.0 declaration and new gtkmm-2.4 declaration My gtkmm-3.0 code associates these Adjustments variables with the adjustments for my ScrolledWindow variable (scrolled_Window) in the following manner: hadjustment = scrolled_Window.get_hadjustment(); vadjustment = scrolled_Window.get_vadjustment(); I tried to mimic this in my new gtkmm-2.4 code as follows: Glib::RefPtr<Gtk::Adjustment> local_hadjustment((scrolled_Window.get_hadjustment())); Glib::RefPtr<Gtk::Adjustment> local_vadjustment((scrolled_Window.get_vadjustment())); hadjustment = local_hadjustment; vadjustment = local_vadjustment; As I mentioned above, this code compiles and runs properly under gtkmm-2.4. But I suspect it is not strictly proper usage – and some problem in this code is causing my program to Segmentation Fault upon exiting. I would appreciate anyone’s insights into this problem. Thanks. Jim Tilton Dr. James C. Tilton Voice: 301-286-9510 NASA Goddard Space Flight Center FAX: 301-286-1776 Mail Code 606.3 E-Mail: James C Tilton nasa gov (Computational & Information Sciences and Technology Office) Greenbelt, MD 20771 URLs: http://ipp.gsfc.nasa.gov/ft_tech_rhseg.shtm and http://science.gsfc.nasa.gov/606.3/TILTON/ |