Hi, I am a user of gtkmm library.
In my application I show some calculated image data employing a Gtk::Image that is initialized with a Glib::RefPtr <Gdk::Pixbuf>. Within my saving method I fetch the data as follow: 1 Gtk::Image const& img (my_canvas->getImage()); // getImage() is const 2 Glib::RefPtr<const Gdk::Pixbuf> pix_buf (img.get_pixbuf()); 3 pix_buf.save(fname, "png"); // fname is a std::string But this approach is not possible since the save() method of class Gdk::Pixbuf is not const. In gtkmm library Gdk::Pixbuf::save() and save_to_buffer() are C++ wrappers around the C functions gdk_pixbuf_save() and gdk_pixbuf_save_to_buffer(), resp. Those C++ methods are not declared const since the C functions take a "GdkPixbuf* pixbuf" parameter (i.e. not const GdkPixbuf* pixbuf). I wonder why the C functions do not take const GdkPixbuf* argument? Is the pixbuf modified inside the save functions? Tom _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list
