Can I see the code part that corresponds to various app elements?

I am wondering if there is a way to find the specific code part that corresponds to various elements on an app user interface. For instance, let's assume we have an app with 4 image planes (using subplot(2,2,1:4)) some sliders that move in accordance to mouse wheel etc. How can I find the exact code parts of those elements? The code that corresponds to each one of the 4 planes and the code that corresponds to the slider that changes with mouse scroll.

[Rik]

Do you have the code itself, or do you have only access to the deployed app? In the latter case, you're out of luck (it might be possible to decompile it, but that is very unlikely to be legal).

[Adam]

UI components are class properties. Just search for them in the code and find the callbacks. Things that you create using subplot will exist where you create them. It is entirely up to you where they spread to from there. I don't really understand the question.

[Stelios Fanourakis]

Thanks a lot