Scans a wide-character string for the first occurrence of a given substring.
#include <wchar.h>
wchar_t *wcsstr (
const wchar_t *wcs,
const wchar_t *substr);
(IN) Points to a wide-character string to scan.
(IN) Points to a wide-character substring for which to search.
Returns a pointer to the located wide-character string, or a NULL pointer if the wide-character string is not found.
The wcsstr function locates the first occurrence in the wide-character string pointed to by wcs of the sequence of characters in the string pointed to by substr.