I understood my problem. In fact I thought that as GTK+ is a bit object oriented, passing arguments was made quite like in C++, and that - in my case - I had a local copy of the parent List. The problem then when I destroyed the Window, is that the List contained null references as objects were destroyed. I have to remove these elements from the list each time I destroy my Window, as the List "lives" longer than the Window in question. -----Message d'origine----- De : gtk-list-bounces@xxxxxxxxx [mailto:gtk-list-bounces@xxxxxxxxx] De la part de zze-DEPREZ Olivier FTRD/DMI/SOP Envoyé : mercredi 23 juin 2004 09:00 À : gtk-list@xxxxxxxxx Objet : RE : gtkwidgexts Hello, I have some problems while passing arguments to a function in GTK+ 2.4.2. This function takes as argument a GtkWidget * (no interest) and a gpointer. This gpointer is in fact a list (Glist *) containing some information I need and the parent window. Everything goes fine untill I want to close this window with gtk_widget_destroy(). It always works the first time, but crashes with a segfault the second or third time. It seems to me that when I create again the parent window and the list of parameters I want to give to my function, there is a problem of allocation/reallocation or something like that ... I guess you would like to see the output errors, but it's not very explicit: bunch of lines with Glib-Object-WARNING : "invalid cast", or with Gtk-CRITICAL: "assertion GTK_IS_(...) failed". Do the gtk_widget_destroy() freeds all the memory a Widget used, especially single and double-chained lists ? Thanks, Olivier _______________________________________________ gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
