pitch & pixels

Hi all,
Surface::LockInfo buf;
surf->Lock(buf);
//How can i get the (x,y) = (189,23) pixel color?
//What are
buf.pixels[]
and buf.pitch
Regards Maoz.[/i]
Surface::LockInfo buf;
surf->Lock(buf);
//How can i get the (x,y) = (189,23) pixel color?
//What are
buf.pixels[]
and buf.pitch
Regards Maoz.[/i]