Set the next candidate as the current candidate
#include <canna/RK.h> int RkNext(cxnum) int cxnum;
RkNext sets the next candidate as the current candidate or, if the current candidate is the last candidate, moves to the first candidate.
If successful, this function moves the current candidate in the context and returns the current candidate number after the move. It returns 0, without doing anything, if it has been run in a nonconversion mode context.