Colorer take5 is a syntax highlighting and text parsing library, that provides
services of text parsing in host editor systems in real-time and transforming
results into colored text. Result information allows to search and build
outlined lists of functions, structures, and to search and indent programming
language constructions (brackets, paired tags). Colorer uses pure C++, XML, it
is fully portable and works on either win32/unix/mac platforms. 

WWW: http://colorer.sourceforge.net/