winbox- How does it interact with a server?(programing)

RouterOS General
1

hi
i am programer c#.
i will create program to manage the users.
my questions.
The winbox it opensource?
How do I change the code?Is it possible?
When we set case.(set ip address to ether) How does it interact with a server?

notes:
i read “Manual:API” and “API command notes” from wiki.mikrotik.com

2

No, Winbox is not open source (it is not possible to change the code).
You may create and use own application via API (but not Winbox),
http://wiki.mikrotik.com/wiki/API

3

To add to Sergejs response, Winbox is not using the API, but since Winbox is not open source, you will have to use the API.