fMouseSamples
BList fMouseSamples;
int32 count = fMouseSamples.CountItems();
BPoint* p = (BPoint*)fMouseSamples.ItemAtFast(0);
BPoint* p = (BPoint*)fMouseSamples.ItemAtFast(i);
int32 count = fMouseSamples.CountItems();
delete (BPoint*)fMouseSamples.ItemAtFast(i);
fMouseSamples.MakeEmpty();
fMouseSamples.AddItem(new BPoint(where));