How to make application window always on top

[katopz]

I want to make some monitoring tool so it should show the graph and appear on top of everything (and also draggable).
I try to search around but didn't see anything related to this, so can someone give me a hint? Thanks!

[madsmtm]

I haven't tried this specific thing myself, but a quick internet search for "How to make application window always on top cocoa", note the added "cocoa" which is Apple's name for AppKit development, reveals at least a few related questions:

• https://cocoadev.github.io/WindowAlwaysInFront/
• https://stackoverflow.com/questions/34618518/how-can-i-make-a-cocoa-window-which-appears-on-top-of-fullscreen-windows
• https://discussions.apple.com/thread/1936456?sortBy=rank

Adapting that to Rust is then "just" a matter of converting the Objective-C code to call the functions exposed by objc2-app-kit.

Haven't read in detail, but changing the window level sounds like a good first approach, so does using NSPanel.

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Have a look and see if you can figure it out, otherwise feel free to say what you run into problems with, then I'll try to give a more detailed answer.