How to make a transparent window that does not interfere with managing other applications through it?

Question

User interface

Good afternoon, I want to create a small program that displays various information in a translucent window on top of other applications. The question is whether it is possible to implement a window in such a way that it is possible to make mouse clicks through it. For now, I assume that it is possible to somehow transfer information about the intercepted coordinates to the OS and send it to the application located directly below it. I would be grateful if someone could explain the principle of window links, for example, in windows, or point to the literature in which this can be read.

Answer 1

If we talk about Windows, then you can set the extended style WS_EX_TRANSPARENT to the window, then it will skip mouse events.