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:
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:
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.
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/