The widgets in the list are not individually referenced.
If you want to iterate through the list and perform actions
involving callbacks that might destroy the widgets, you must
call g_list_foreach (result, (GFunc)g_object_ref, NULL) first,
and then unref all the widgets afterwards.
Returns a list of all existing toplevel windows.
The widgets in the list are not individually referenced. If you want to iterate through the list and perform actions involving callbacks that might destroy the widgets, you must call g_list_foreach (result, (GFunc)g_object_ref, NULL) first, and then unref all the widgets afterwards.