>How to do that?

I can't help you on how to build these in C++.

I remember having seen an article in the VBPJ magazine about one year ago. This article also gave C++ code.

>And how quick those functions will be?

Quicker than the VB-natives. How much faster? Depends on what you do with them!

What are you doing with these functions that gives you unacceptable delays?