Le mar 08/06/2004 à 21:07, Dale Wiles a écrit :
> I have a GTK app that places a bunch of Canvas Items on to a Gnome
> Canvas. The user can then click on the Items and move them around.
> When the Item is clicked on it also raises to the top.
>
> My problem arises when saving the results of the clickage. I can
> get the X and Y of the Items, but I can't figure out how to get the Z
> (stacking order).
>
> Does anyone know of a way to get the Z of an Item, or get a list
> of Items sorted by stacking order?
>
> Thanks,
> Dale
GnomeCanvasGroup has pointers to the list of its children:
struct _GnomeCanvasGroup {
GnomeCanvasItem item;
/* Children of the group */
GList *item_list;
GList *item_list_end;
};
the two GList* point to the same list, item_list->data is the bottom
item and item_list_end the top item.
If one of the children is a group, it has its own children of course.
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