How does a WIndows Form refer to a component in a .cpp file?

Question

C++ / C#

As usual, there is Form1.h and let's say Name.cpp.
How in the cpp file will refer to the form component, for example, how to implement label1->Text=""?
#include "Form1.h" is present.
At such input the compiler does not see. I'm new, so I don't know much.

Answer 1

You need not just an include, but also pass a pointer to this form to the function that calls. And take label1 from the pointer and so on.