unilen
Returns the number of unicode characters in a string (not counting the NULL terminator)
#include <unicode.h>
N_EXTERN_LIBRARY(size_t) unilen (
const unicode N_FAR *s);
uses netwin32 Function unilen (s : const unicode ) : size_t;
Number of characters (not bytes) in s, not counting the null-terminating character.
unilen corresponds to the C strlen function.
For sample code, see Section 3.17, Example: unilen.