Does C++ have a control like VB's FlexGrid? If so can someone post the Const for the 'Events' of it or the header file.

In VB I am trying to capture when TextMatrix is used or AddLine and I hooked it and found that it receives 2 Messages 15 and 20 and 1 of them has a wParam but I can't figure out what the info is supposed to be. So I was thinking if I could look in the header file maybe I could see something that helps. I hope this makes sense (probably not). I have C++ but at home not at work where I am.