int FindOneOf( const char* pszCharSet ) const;
pszCharSet
String containing characters for matching.
Searches this string for the first character that matches any character contained in pszCharSet.
The zero-based index of the first character in this string that is also in pszCharSet; -1 if there is no match.
CString s( "abcdef" );
ASSERT( s.FindOneOf( "xd" ) == 3 ); // 'd' is first match