Contact from VS C++ to Excel VBA

[Albatross]

I've got an app written in Visual Studio C++ that deals with excel lines of data and presents it in a Form.

I now need to print the data. A while back I wrote this app in VBA and printing was a simple task of calling UserForm1.Print

How can I get my C++ app to call up this UserForm1 and call that UserForm1.Print command?

Once I get the connection between these two entities I can send the data I want printed and let VBA do the print work.

How does my C++ talk to my Excel VBA?

Thanks for anything

[VictorN]

Are you using an excel automaton in your VC++ code?

[Albatross]

I don't know what excel automation is.
I learned C++ in the 1970s, really.
I use a third party software "libxl" to read cells write cells and open/save workbooks/sheets.

[VictorN]

I don't know what excel automation is.

How to automate Excel from C++ without using MFC or #import
How to automate Excel from MFC and Visual C++ 2005 or Visual C++ .NET to fill or obtain data in a range using arrays

I use a third party software "libxl" to read cells write cells and open/save workbooks/sheets.

Doesn't this "libxl" have a Print function?