| GTK+ FAQ | ||
|---|---|---|
| <<< Previous | About GLib | Next >>> |
The GList object is defined as:
typedef struct _GList GList;
struct _GList
{
gpointer data;
GList *next;
GList *prev;
}; |
To use the GList objects, simply:
GList *list = NULL;
GList *listrunner;
gint array[] = { 1, 2, 3, 4, 5, 6 };
gint pos;
gint *value;
/* add data to the list */
for (pos=0;pos < sizeof array; pos++) {
list = g_list_append(list, (gpointer)&array[pos]);
}
/* run through the list */
listrunner = g_list_first(list);
while (listrunner) {
value = (gint *)listrunner->data;
printf("%d\n", *value);
listrunner = g_list_next(listrunner);
}
/* removing datas from the list */
listrunner = g_list_first(list);
list = g_list_remove_link(list, listrunner);
list = g_list_remove(list, &array[4]); |
The same code is usable with singly linked lists (GSList objects) by replacing g_list_* functions with the relevant g_slist_* ones (g_slist_append, g_slist_remove, ...). Just remember that since you can't go backward in a singly linked list, there is no g_slist_first function - you'll need to keep a reference on the first node of the list.
| <<< Previous | Home | Next >>> |
| About GLib | Up | Memory does not seem to be released when I free the list nodes I've allocated |