8 memlsetrefresh(Memimage *i, Refreshfn fn, void *ptr)
13 if(l->refreshfn!=nil && fn!=nil){ /* just change functions */
19 if(l->refreshfn == nil){ /* is using backup image; just free it */
20 freememimage(l->save);
27 l->save = allocmemimage(i->r, i->chan);
30 /* easiest way is just to update the entire save area */
31 l->refreshfn(i, i->r, l->refreshptr);