Get the selection something like this:
GList *sel; sel = GTK_LIST(list)->selection;
This is how GList is defined (quoting glist.h):
typedef struct _GList GList;
struct _GList
{
gpointer data;
GList *next;
GList *prev;
};A GList structure is just a simple structure for doubly linked lists. there exist several g_list_*() functions to modify a linked list in glib.h. However the GTK_LIST(MyGtkList)->selection is maintained by the gtk_list_*() functions and should not be modified.
The selection_mode of the GtkList determines the selection facilities of a GtkList and therefore the contents of GTK_LIST(AnyGtkList)->selection:
| selection_mode | GTK_LIST()->selection contents |
|---|---|
| GTK_SELECTION_SINGLE | selection is either NULL or contains a GList* pointer for a single selected item. |
| GTK_SELECTION_BROWSE | selection is NULL if the list contains no widgets, otherwise it contains a GList* pointer for one GList structure. |
| GTK_SELECTION_MULTIPLE | selection is NULL if no listitems are selected or a a GList* pointer for the first selected item. that in turn points to a GList structure for the second selected item and so on. |
| GTK_SELECTION_EXTENDED | selection is NULL. |
The data field of the GList structure GTK_LIST(MyGtkList)->selection points to the first GtkListItem that is selected. So if you would like to determine which listitems are selected you should go like this:
{
gchar *list_items[]={
"Item0",
"Item1",
"foo",
"last Item",
};
guint nlist_items=sizeof(list_items)/sizeof(list_items[0]);
GtkWidget *list_item;
guint i;
list=gtk_list_new();
gtk_list_set_selection_mode(GTK_LIST(list), GTK_SELECTION_MULTIPLE);
gtk_container_add(GTK_CONTAINER(AnyGtkContainer), list);
gtk_widget_show (list);
for (i = 0; i < nlist_items; i++)
{
list_item=gtk_list_item_new_with_label(list_items[i]);
gtk_object_set_user_data(GTK_OBJECT(list_item), (gpointer)i);
gtk_container_add(GTK_CONTAINER(list), list_item);
gtk_widget_show(list_item);
}
}To get known about the selection:
{
GList *items;
items=GTK_LIST(list)->selection;
printf("Selected Items: ");
while (items) {
if (GTK_IS_LIST_ITEM(items->data))
printf("%d ", (guint)
gtk_object_get_user_data(items->data));
items=items->next;
}
printf("\n");
}