What is ofx..... ?

Hi to all.
I`ve been trying with one project.
What is ofx…
because all the errors is coming from there.

thank you for your time to resolve mi problem.

“ofx” is a prefix traditionally used with OF addons; in your case it looks you’re having trouble with ofxOpenCV. From what I see in your screenshot, it looks you’re not including the addon’s files in your project; you should look at the startup guide on the wiki: it will give you hints on how to properly setup an OF project.

If you’re in a hurry, you can just make a copy of the opencv example included in your OF bundle: it already has the needed files and libraries, so you can just clean testApp.h and testApp.cpp and fill with your code.