CString與WCHAR及CString與char轉換

CString a = L"String Test";

//CString to WCHAR
WCHAR b[MAX_STRLEN];
wsprintf(b, (L"%s"), a);

//CString to char
char c[MAX_STRLEN];
WideCharToMultiByte(CP_OEMCP, NULL, a, -1, c, MAX_STRLEN, NULL, FALSE);