+
+ @param ch The character to look for.
+ @param rest Filled with the part of the string following the last
+ occurrence of @a ch or the copy of this string if it was not found.
+ The same string is returned by AfterLast() but it is more efficient
+ to use this output parameter if both the "before" and "after" parts
+ are needed than calling both functions one after the other. This
+ parameter is available in wxWidgets version 2.9.2 and later only.
+ @return Part of the string before the last occurrence of @a ch.