Are there any windows like colllection classes like Cmap,Clsit etc inbuilt in qnx or fuctions which provide their equivalent fuctionalities?
You can use STL/C++ Standard library container classes (list, vector, map etc.):
I am a big fan of the Poco library. It provide lots of extra tools. Far simpler and a LOT more consistent then the boost library. There is stuff for networking, xml, threads, mutex, etc.