Creating extensions for Visual Studio 2010?

Question

C++ / C#

Good afternoon.
In connection with the development of its extension for VS10, the task arose to make IntelliSense.
The language is C ++, the selection by its functions will be done by analogy with the most excellent example of the esoteric language Ook .
How can you combine the output of your functions \ constants with functions \ constants from the standard IntelliSense (str *** and so on)?