The Dink Network

Is 45 the number that it has in DinkEdit? Anyway, there are a whole bunch of different number types, including editor sprite numbers and game sprite numbers. Editor sprites numbers will range from 1-99 and will be visible in DinkEdit. Game sprite numbers are created 'on the fly', so they will probably be different from editor sprite numbers due to a different order.

Anyway, if 45 is indeed the editor number of the sprite, then you do this:

int &mysprite = sp(45);
sp_nodraw(&mysprite, 1);