glib_sys

Function g_datalist_id_replace_data

Source 
pub unsafe extern "C" fn g_datalist_id_replace_data(
    datalist: *mut *mut GData,
    key_id: GQuark,
    oldval: gpointer,
    newval: gpointer,
    destroy: GDestroyNotify,
    old_destroy: *mut GDestroyNotify,
) -> gboolean