WThing *first_thing(WThing *parent, const WObjDescr *descr)
{
if(parent==NULL)
return NULL;
return get_next_thing(parent->t_children, descr);
}
WThing *subthing(WThing *parent, int filt)
{
if(parent==NULL)
return NULL;
return get_next_thing(parent->t_children, filt);
}
WThing *next_thing(WThing *first, const WObjDescr *descr)
{
if(first==NULL)
return NULL;
return get_next_thing(first->t_next, descr);
}
WThing *next_thing(WThing *first, int filt)
{
if(first==NULL)
return NULL;
return get_next_thing(first->t_next, filt);
}