int Collate( LPCTSTR lpsz ) const;
Zero if the strings are identical, <0 if this CString object is less than lpsz, or >0 if this CString object is greater than lpsz.
The other string used for comparison.
Compares this CString object with another string using the generic-text function _tcscoll. The generic-text function _tcscoll, which is defined in TCHAR.H, maps to either strcoll, wcscoll, or _mbscoll depending on the character set that is defined at compile time. Each of these functions performs a case-sensitive comparison of the strings according to the code page currently in use. For more information, see https://msdn.microsoft.com/en-us/library/h1x0y282(v=vs.60).aspx in the Run-Time Library Reference.
CString str1 = _T("co-op"); CString str2 = _T("con"); int n; // collation uses language rules, such as ignoring dashes n = str1.Collate(str2); ASSERT(n > 0); // comparison is a strict ASCII comparison with no language rules n = str1.Compare(str2); ASSERT(n < 0);