How to click a button in the Windows interface?

Question

C++ / C#

After the bot presses the Select File button, you
need to track the window that appears and select an image to upload to the site. All this needs to be automated. Tell me by what means this can be done, through win api or how ??

Answer 1

What for? And what about just executing a request by passing the path to the file, or how?

Answer 2

Win API - take the title, center it and click on the button by coordinates. Or try to find the title and the button using Spy++.