#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <locale.h>
void print_hex(const UCHAR *buf, int len)
{int i;for (i = 0; i < len; i++) {printf("0x%02x ", *(buf + i));if (!((i + 1) % 4))printf("\t");if (!((i + 1) % 8))printf("\n");}
}
int main(int argc, char **argv)
{char buf[] = {0x41, 0x00, 0x42, 0x00,     0x43, 0x00, 0x44, 0x00,0x0d, 0x59, 0xf6, 0x4e,        0x00, 0x00};WCHAR *uStr = (WCHAR *)buf;int uLen, aLen;char *aStr, *locale;/* Set locale */locale = setlocale(LC_ALL, "");if(locale == NULL) printf("Locale not set\n");elseprintf("Locale set to %s\n", locale);/* Print buf */wprintf(L"buf: %ws\n", buf);print_hex((UCHAR *)buf, 16);printf("\n");/* Unicode -> ANSI */aLen = WideCharToMultiByte(CP_ACP, 0, uStr, -1, NULL, 0, NULL, NULL);aStr = (char*) malloc(aLen);WideCharToMultiByte(CP_ACP, 0, uStr, -1, aStr, aLen, NULL, NULL);printf("aStr: %s\n", aStr);print_hex((UCHAR *)aStr, 16);printf("lstrlenA(aStr): %d\n", lstrlenA(aStr));printf("aLen: %d\n\n", aLen);/* ANSI -> Unicode */uLen = MultiByteToWideChar(CP_ACP, 0, aStr, -1, NULL, 0);uStr = (WCHAR *) malloc(uLen * sizeof(WCHAR));MultiByteToWideChar(CP_ACP, 0, aStr, -1, uStr, uLen);wprintf(L"uStr: %ws\n", uStr);print_hex((UCHAR *)uStr, 16);printf("lstrlenW(uStr): %d\n", lstrlenW(uStr));printf("uLen: %d\n\n", uLen);free(aStr);free(uStr);return EXIT_SUCCESS;
}

Locale set to Chinese (Simplified)_People's Republic of China.936
buf: ABCD复件
0x41 0x00 0x42 0x00     0x43 0x00 0x44 0x00
0x0d 0x59 0xf6 0x4e     0x00 0x00 0x40 0x00aStr: ABCD复件
0x41 0x42 0x43 0x44     0xb8 0xb4 0xbc 0xfe
0x00 0x4c 0x4c 0x41     0x54 0x45 0x3d 0x43
lstrlenA(aStr): 8
aLen: 9uStr: ABCD复件
0x41 0x00 0x42 0x00     0x43 0x00 0x44 0x00
0x0d 0x59 0xf6 0x4e     0x00 0x00 0x6f 0x70
lstrlenW(uStr): 6
uLen: 7