Re: GtkRadioMenuItem, GSList

[Daniel Pekelharing <legendstar gmail com>]

On Sat, 2005-11-05 at 14:13 +0200, Daniel Pekelharing wrote:
> Hi all,
>
> I have a function for creating and adding GtkRadioMenuItems into a menu,
> something like this:
>
> /* Global vars */
> static GtkWidget *menu;
> static GSList *list = NULL;
>
> void add_item(myobj *obj, GCallback callback)
> {
>       GtkWidget *menu_item;
>
>       menu_item = gtk_radio_menu_item_new_with_label(list, obj->name);
>       list = gtk_radio_menu_item_get_group(GTK_RADIO_MENU_ITEM(menu_item));
>
>       gtk_menu_shell_append(GTK_MENU_SHELL(menu), menu_item);
>       g_signal_connect(G_OBJECT(menu_item), "activate", callback, obj);
>       gtk_widget_show(menu_item);
> }
>
>
> This works fine, adding an item to the menu each time its called.
>
> The problem comes, if I destroy the most recently created menu item
> then the radio-group "list" variable becomes invalid.
>
> The question I have is where should I point "list" to on destroying the
> most recent item?
>
> I did try setting it to: list = list->next
> before destroying the menu item, but it just spits out error messages.
>
> Thanks!

In case anyone else ever has this problem.. I have now solved it,
my error was actually in correctly determining if a menu item was the
last in the list...


When destroying "menu_item" :

if (list != NULL) {
        if (list->data == (gpointer)menu_item)
                list = list->next;
}

gtk_widget_destroy(menu_item);


This works fine.
-- 
Daniel Pekelharing
<legendstar gmail com>