Call a class in Managed Type Form

Question

Hi, Have a problem that has been bugging me for a couple of weeks now.

I want to do two things...

1. Change a textfield text or picturebox image from a native function.....It happens in the managed type(eg Form 1)....How can I change this image or text externally from the managed type...

I'm getting the obvious code.

C2065 - undeclared identifier

1. Just for interests sake... if I create a function inside that managed type. How can I call it. say TestFunction(); or ClassName::TestFunction(); from another class....

What is the prefix to this VC++ managed form?

(for interests sake, I'm not doing it this way, was wondering I've tried so many combinations)

.............

any help would be great, been doing lots of reading and exercises but can't seem to solve this problem.

James.